Questions Asked on
November 9, 2010

Chemistry: moles
How many moles are in 508 g of ethanol?
asked by Rylee 
Chemistry Gd 11
How many moles of chlorine gas would reacht with 10 moles of sodium to form sodium chloride?
asked by Tarkan 
physics
a free body diagram of a boy sliding down a hill on a sled
asked by kayla 
Chemistry Gd 11
How many product can be produced from 37g of sodium ???
asked by Tarkan 
Chemistry Gd 11
How many molecules of product would be produced from 10g of chlorine gas ??
asked by Tarkan 
Chemistry Gd 11
If 150g of C8H18 is combusted what mass of water will be produced???
asked by Tarkan 
science
Spongy bone is full of arches and struts. Why is this so important?
asked by lilly 
french 3
I understand that l'imparfait occurred habitually in the past, and passé composé happened only once. However I'm not sure how to form this sentence: Some thought his work was grotesque, others thought it was interesting. Certains critiques ont pensé que
asked by amanda 
art
when was Victorian Bouquet painted by Severin Roesen?
asked by Lucy 
Psyc Lifespan Development
Slef esteem in Adolescents *What are theoretical causes of behavior should include more than one theoretical explaination / discussion *relevance to overal development
asked by samantha 
Chemistry
A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: , 265 mmHg; Ar 134 mmHg; and ,O2 157 mmHg; The mixture also contains helium gas.
asked by Lisa 
8th grade
According to the U.S. Census Bureau in 2009 there were 21,854,374 veterans in the United States. Veterans of the Korean War accounted for 12.4% of that total, while 10.7% were veterans of World War II. What is the positive difference between the numbers of
asked by help 
critical thinking
Can some please help with these questions. I just want to make sure I am on the right path. 1. Our frame of reference. a. definitely makes us objective and openminded b. stops us from having obstacles in our approach to reading, c. limits how we view the
asked by quvell 
Science
What is the force of a 2.0N force and an 3.0N force acting on an object in the same direction?
asked by ced 
physics
Two large circular metal plates are parallel and nearly touching, only 4.1 mm apart. The two plates are connected to the opposite terminals of a 9 V battery. (a) What is the average electric field strength in the space between the plates? V/m (b) What is
asked by dede 
physics
No glass is perfectly transparent. Mainly because of reflections, about 90% of light passes through an average sheet of clear windowpane. The 10% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is
asked by Anonymous 
3rd grade
whats the homonym for the word flower??
asked by jay 
Chemistry
How many calories would be needed to convert 8.0g of ice at 0C to steam at 100C?
asked by Amber 
accounting
An employee earns $40 per hour and 1.75 times that rate for all hours in excess of 40 hours per week. Assume that the employee worked 60 hours during the week, and that the gross pay prior to the current week totaled $58,000. Assume further that the social
asked by Anonymous 
chemistry
Calculate the mass of ethanol required to heat 200mL of water from 21 degrees celcius to 45 degress celcius
asked by Kate 
MECHANICS
CARS A 7B ARE 60 M APART TRAVELLING RESP AT THE CONST SPEED OF 32 AND 24 KPH ON AN ICE COVERED ROAD .KNOWING THAT 45 SEC AFTER DRIVER APPLIES HIS BRAKES TO AVOID OVERTAKING CARB ,THE 2 CARS COLLIDE DETERMINE UNIFORM DECELLERATION OF CAR A RELATIVE VEL OF
asked by HARSHITH 
English/Writing
5. Choose one of the topics listed below and write a fivesentence paragraph using chronological order to arrange the details of the paragraph. a. Signing on to my homepage is simple. b. Writing a paper takes patience and time. c. Let me explain how to
asked by jackie rios 
economics (game theory)
Consider the normal tick tack toe game, but this time you have to AVOID getting 3 in a row in any line. Is there any strategy you can tell me that will make sure the first mover doesnt lose. Thanks
asked by david 
Physics
A 56kg adult is climbing up a staircase of 67m. By how much would her body temp increase if her lost energy went into increasing her body temperature during this climb (in C)? I calculated the required amount of joules to reach the top to be 37x10^4J but i
asked by Alona 
adult education
Write two paragraphs explaining the changes that you would make to revise the paper. The minimum word count for these two paragraphs is 400 words.The Dark Knight was the most popular film of 2008. [Stating it was the most popular film of 2008 is a big
asked by Anonymous 
english
The Dark Knight was the most popular film of 2008. [Stating it was the most popular film of 2008 is a big statement that needs supporting documentation. Also be sure to indent the first line of each paragraph] Unlike most popular summer movies it was also
asked by Anonymous 
English Literature
Can anyone tell me which Play the Phrase, "Drama Kings and Queens, Unite!" came from ar at least point me in the right direction?
asked by Samuel 
Algebra 2
solve log2(3x1)log2(x1)=log2(x+1) i have absolutely no idea how to solve this. can anyone help me, please?
asked by Kelly 
Math
How would you solve: Ln[e^5x/x(x^4+1)] in a form with no logarithms of products, quotients, or powers?
asked by Anonymous 
math
if im trying to get 1/3 from 190, how would i get the answere by calculator
asked by josh 
english
She asked me if me and Greg could handle a yard like hers A. Change could to can. B. Change hers to her's C. Change me and Greg to Greg and I. D. Make no change.
asked by lilly 
physics
A light spring with force constant 3.00 N/m is compressed by 6.00 cm as it is held between a 0.350 kg block on the left and a 0.700 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them
asked by natalie 
math
if im trying to get the answer to "what is one third of 190" how would i input it on a calculator
asked by josh 
Math
how would you simplify log10^x3 ? i tried the examples from the book, but it just confuses me. someone please help.
asked by Meg 
math Dr. R
ok. "what is 1/3 of $3900" and if i would be using a calculator how would i input it
asked by josh 
math
A carpenter can make some chairs and stools. All together there are 32 legs. If the carpenter has pieces of wood that can be used to make 9 seats, how many chairs and how many stools can a carpenter make?
asked by dana 
algebra
show the algebraic inequality The profit for a company is determined by the equation y = 0.02x – 0.30, where y represents the profit and x represents the number of items sold. How many items must be sold so that the profit will be at least $4000?
asked by franklin 
math
If a projectile is launched from a platform 30 feet high with an initial velocity of 128 feet per second, then the height of the projectile at t seconds is given by s(t) = –16t2 + 128t + 30 feet. (a) At what time does the projectile attain its maximum
asked by Math is HARD 
western experience
In the nearly fifty years since the end of WWII, the continent of Europe has become more tightly integrated than ever before. What forces have made for this increasing unity, and what are the political landmarks that chart its path?
asked by Kim 
Western Civilization
In the postwr West, philosophers and intellectuals have challenged many of the assumptions abouth truth, objectivity, science, and progress that have dominated the Western outlook since the Enlightenment. Summarize the arguments and approaces of the most
asked by Ashley 
physics
a body of mass 20 kg suspended from a rigid support is rotated on a cylinder of d=20cm calculate moment of force above the axis of cylinder
asked by tasneem 
Chemistry
How many milliliters of a 0.1 M NaOH solution is needed to completely neutralize 1 liter of lemonade containing 25% citric acide
asked by RS High School 
Chemistry
How many grams of oxygen gas (O2) will it take to oxidize 1 pound of iron metal? Explain.
asked by Lawrenceburg High School 
college
what's the relation between these numbers 1,2,4,9,16,25,36,...
asked by dayo 
Math
The sum of two opposite angles of a parallelogram is 130 degree. Find the measure of each of its angle.
asked by Tapas 
4th Grade  Science Fair Project
Which brand of bandaid sticks best? How does Generic vs. Name brand differ in the way the bandaid sticks? Is one better than the other? Is there a site to help me with this Science Fair Project? Can't find one about BandAids????
asked by John 
physics help
A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides headon with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision
asked by david 
AlgebraPlease help me
Could you please show me how to solvethis: x+6/4x^2 + 3/2x^2 = x + 4/2x^2 Please show me the stepsI don't even know where to start and I have 30 of these for homework Thank you
asked by Matthew 
health care law and ethics
As the office manager, what are the implications of having a different standard of care for trained medical staff and laypeople? What liability issues exist for the office and how does standard of care affect insurance for the medical office?
asked by Lida 
criyal thinking
What are some racial imbalances in education, the economy, family life, housing, criminal justice, health care, and politics.
asked by Anonymous 
computer science
how do i write a program in python for an atm machine
asked by ralph 
Chemistry
40.0 ml of an acetic acid of unknown concentration is titrated with 0.100 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 5.10. What was the concentration of the original acetic acid solution? [Ka(CH3COOH) = 1.8
asked by Kelly 
physics
A Styrofoam box has a surface area of 0.75 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 24°C. If it takes 7.6 h for 5.0 kg of ice to melt in the container, determine the thermal
asked by Ericahelp! 
physics
An object of mass 4.3 kg is projected into the air at a 45° angle. It hits the ground 3.8 s later. What is its change in momentum while it is in the air? Ignore air resistance.
asked by tim 
physics
A 0.01kg baseball traveling in a horizontal direction with a speed of 12 m/!@#$%^&s a bat and is popped straight up with a speed of 15 m/s. (a) What is the change in momentum (magnitude and direction) of the baseball? (b) If the bat was in contact with
asked by tim 
com156
The Dark Knight was the most popular film of 2008. [Stating it was the most popular film of 2008 is a big statement that needs supporting documentation. Also be sure to indent the first line of each paragraph] Unlike most popular summer movies it was also
asked by Anonymous 
math
would rounding 255,116 with the first 5 underlined be 260,000?
asked by m 
Sixth grade math
Simplify 49/7*7+63
asked by Lynn 
Psyc Lifespan Development
What are theoretical causes of behavior in adolescent self esteem?
asked by samantha 
math
write as an addition problem (21)42 A) (21)(42) B) (21)+42 c) (21)+(42) D) none of the above I thought it would be c. Is this correct?
asked by m 
college
XYZ's receivables turnover is 10x. The accounts receivable at yearend are $600,000. The average collection period is 36 days. What was the sales figure for the year assuming all sales are on credit?
asked by Pam 
history
In the 1920s, Babe Ruth was famous because
asked by sara 
Chem
What happens when a student cup between trials? What effect will the error have on the calculated value of the delta H of neutralization?
asked by Kai 
english
is it it is true that she is more clever or cleverer
asked by julie 
maths
An alloy is made by using copper and zinc in the ratio of 17:3 how much zinc is used to make 4kg of the alloy?
asked by Anonymous 
college
How would you use the concepts from Ch. 8 in a reallife situation? Describe how these concepts might be useful.
asked by rosa 
COM 126
I am looking for a tutor to help me answer and communicate with the DQ questions for COM 126 Discussion Questions and Replies Weeks 27 I am looking for help with week’s 27, COM126 Communication and the Media Discussion Questions and Replies. I will
asked by nsrmom 
Physics
A space vehicle is traveling at 5260 km/h relative to Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 89 km/h relative to the command module. The mass of the motor is four times the mass of the module. What is the
asked by Mike 
science
why is objectivity important to forensic scientists
asked by amy 
math
find 2 numbers to fit all these rules: to the nearest 10 and 100 ,both round to the same number. 2 the estimated sum is 200 3 the estimated difference is 0.
asked by moeez 
Math
A tropical water lily doubles in size each week. If it takes 60 weeks for the plant to completely cover a pond, when will half the pond be covered?
asked by Maya 
health
explain from a physiological standpont how eating disorders may lead to health promblems? provide at least three examples to support your answer? I have the first half of the question figured out the one that asks for three examples to support my answer is
asked by a 
economics
please i wish to know the relationship between arithmetic progression and geometric progression as related to business studies
asked by Anonymous 
statistics
Richard has been given a 5question multiplechoice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn't know any of the answers. The success occurs if
asked by Anonymous 
Spanish 1
These were tricky for me: 25. Fernando Y Estaban _____ deportes. a. practicar b. practicas c. practican d. practicáis D? 26. Linda ____ estudiamos en casa a. y Alberto b. y tú c. y Ud d. y yo A? 27. "¿_____estudias?" "En casa." a. Cómo b. dónde c.
asked by mysterychicken 
English
“A romance must make the "romantic relationship between the hero and the heroine ... the core of the book."(Berkley Group). “My heart stopped. It just stopped beating. And for the first time in my life, I had that feeling. You know, like the world is
asked by Rebecca 
history
create a college that shows how ancient greek culture is reflected in modernday society.
asked by javier 
English
how do i cite a quote from the internet said by an author on a works cited page?
asked by Rebecca 
college
· Identify two different points of view for the topic from the list in Appendix B that you have chosen. Choose the point of view you will use in your paper and explain why you have chosen it.
asked by Angie 
math
An 8 ounce bottle of hairspray costs $3.66. Find the unit price in cents per ounce. would it be 0.4575 or 45.75 cents per ounce?
asked by m 
6th grade
what fraction of 1year is march 3km is 900cm,£2.50 IS 30P
asked by chirag 
6th Grade
what fraction of a turn does a minute hand turn through between 6:25pm and 7:15pm 10:24pm and 11.58pm
asked by chirag 
Chemistry
Why does sulfric acid make the electrolysis reaction of H2 and O2 go more rapidly?
asked by Amanda 
graphing
given order pairs (4,2) and (1,5), develop an equation in the slope intercept format first solve for the slope (m) then in the equation in the slope intercept format y=mx+b
asked by Pat 
Chemistry
A voltaic cell is based on the reduction of Ag^+(aq) to Ag(s) and the oxidation of Sn(s) to SN^2+(aq). Write halfreactions for the cell's anode and cathode, and write a balanced cell reaction.
asked by Amanda 
Chemistry
A piece of cadmium is placed in a solution in which [Cd^2+]=[Sn^2+]=1.00M. Will the following reaction proceed spontaneously? Cd(s)+Sn^2+(aq)>Cd^2+(aq)+Sn(s)
asked by Amanda 
math
A loud speaker at a rock concert generates 102 W/m2 at 20m with a frequency of 1 kHz. Assume that the speaker spreads its intensity uniformly in all direction. (a) What is the sound level ( = ?) at 20 m? (b) What is the total acoustic power output of
asked by nizar 
Physics. Please Help!!
A hot air balloon starts at its launching station and it goes at a horizontal speed of 2.7 m/s and a vertical wind of 1.1 m/s. Once it reaches an altitude of 202 m, it stays at that altitude for 10.3 s, which is when it drops a sandbag. How far will the
asked by Kourt 
Chemistry
1. Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance. (a) Sodium Chloride, NaCl Na+ + Cl (b) Hydrogen bromide, HBr (c) Iron (III) sulfate, Fe2(SO4)3 (d) Ethanol, CH3CH2OH (e) Glucose, C6H12O6
asked by Sara 
Algebra 2
How would you solve 12/1+2e^x=6 ? the e^x confuses me. someone please help.
asked by Meg 
Geometry
Find the measure of each side of equilateral triagnle RST with RS = 2x + 2, ST = 3x, and TR + 5x 4.
asked by Nancy 
physics
A car is moving such that its kinetic energy is 2.20×105 J. The car accelerates and the engine does 2.10×105 J of work to accelerate the car. What is the final kinetic energy of the car? Ignore energy lost to friction. (Your answer must be accurate to at
asked by Anonymous 
COLLEGE CHEMISTRY
Calculate the pH of a 0.052 NH4Cl aqueous solution
asked by shanice 
College Chemistry Help Please!
what is the pH of a solution that is 0.200 M in methylamine, CH3 NH2 CH3NH2+ H20 CH3NH3+ + OH Kb= 4.2 x 10 ^4
asked by shanice 
chem
in the following total ionic equation, which ions are spectator ions? Cu2+ (aq) + 2NO3(aq)+2Na+(aq)+S2(aq)>CuS(s)+2NO3(aq)+2Na+(aq)
asked by julia 
college chemistry
What is the pH of the solution obtained by diluting 500 mL of 0.0200 M NH3 (aq) to 1.000 L ?
asked by shanice 
calculus
(1 pt) The acceleration due to gravity, g, is given by g = (G*M)/(r^2) where M is the mass of the Earth, r is the distance from the center of the Earth, and G is the uniform gravitational constant. (a) Suppose that we change from our distance from the
asked by Student42 
accounting
Your department’s account software is extremely outdated and you have included the purchase of new software int his year’s fiscal budget. You have decided it is time to start looking into purchasing your company’s accounting software have chosen
asked by meka 
U.S History
What where some complex conditions in the south during the recontruction era?
asked by Attalah:) 
English
Classify as Simple, compound, complex or compound complex. 1)There has been a significant change in public opinion about air pollution since the Donora disaster of 1948. 2)Although public opinion about air pollution has changed, we have only begun the
asked by Tom Jameson 
chem
suppose you had an unknown solution that contained either dissolved NaOH, NaCl< or NaNO3. you add 4 drops of AgNO3 solution to 4drops of the unknown solution and observed that no solid formed. What can be concluded the unknown solution? why?
asked by julia 
Chemistry 110
Write the formulas of the principal molecular or ionic species present in an aqueous solution of each substance. (a) Sodium Chloride, NaCl (b) Hydrogen bromide, HBr (c) Iron (III) sulfate, Fe2(SO4)3 (d) Ethanol, CH3CH2OH (e) Glucose, C6H12O6 (f) Ammonium
asked by kim k 
Chemistry 110
4. The electrical conductivity of deionized water is commonly used as an index of its purity. Explain.
asked by kim k 
Chemistry 110
3. Suppose that part (II) of the experiment were carried out with aqueous NaOH instead of Ba(OH)2 to form soluble Na2SO4 along with H2O as products. (a) Write the overall balanced equation. (b) Write the net ionic equation. (c) How would the graph of
asked by kim k 
Statistics
Is this true or false? In an experiment involving matched pairs, a sample of 13 pairs of observations is collected. The degree of freedom for the t statistic is 11.
asked by rick 
Statistics
Is this true or false? In an experiment involving matched pairs, a sample of 13 pairs of observations is collected. The degree of freedom for the t statistic is 11.
asked by rick 
4th Grade  Science Fair Project
Which brand of bandaid sticks best? How does Generic vs. Name brand differ in the way the bandaid sticks? Is one better than the other? Is there a site to help me with this Science Fair Project? Can't find one about BandAids????
asked by John 
math
At Sam's Office Supply, a package of 3 colour inkjet catridges costs $216. At Ink World, the same brand of catridge costs $79 each. How much more does a colur catridge cost at Ink World?
asked by anonymos 
algebra
A boat traveling on the Snake River travels 24 miles upstream in 3 hours. The return trip takes the boat only 2 hours. Find the rate of the boat in still water.
asked by Anonymous 
English
how do i cite a quote from the internet said by an author on a works cited page?
asked by Rebecca 
Physics
(Delete the spaces between the characters for the URL of the question): h t t p : / / g o o . g l / E 9 M X o
asked by Phillip 
Chemistry 110
Pure water in contact with air has a higher conductivity than the same water that has had nitrogen gas bubbled through it. Why?
asked by kim k 
chem
AgNO3+NaOH>AgOH+NaNO3 give me molecular , total ionic and net ionic???"
asked by julia 
english
The first European novel is generally considered to be _____. Pamela Robinson Crusoe Gulliver's Travels Don Quixote Silas Marner
asked by danny 
math grade 11
simplify √(x^5y^8) the answer is x^5/2y^4 does it matter if 5/2 is replaced with 2.5? x^2.5y^4 its the same thing right?
asked by priya 
ALGEBRA
Hello. Three quick questions that I have worked on just need confirmation. 1. I need to find the intercepts and then use them to graph the equation. 2y6=2x; I have x = 0 for y  intercept; 2y6=2(0); 2y6 = 0; 2y = 6; y = 3. I set y at 0 also. 2 (0)  6 =
asked by Amy 
physics
A student pulls on a rope attached to a box of books and moves the box down the hall. The student pulls with a force of 182N at an angle of 25° above the horizontal. The box has a mass of 35kg and &mu k between the box and the floor is 0.27. What is the
asked by CJ12 
Grade 11 Math
solve for the zeroes im not sure if I'm right or not f(x)= 4x^22x is the answers x=0 and x= 2
asked by elian 
English
This paper draws on three criticisms of both the novel and the romantic literature used to conclude that yes, this is a romance novel because the novel consists of a deep, romantic love between the two main characters, a central love story and an
asked by Rebecca 
english
A novel of manners deals with the customs of a specific social class. true?
asked by danny 
sociology
How can the three sociological perspectives (e.g., social functionalism, social conflict, and symbolic interaction) be used to conceptually understand multiculturalism?
asked by Isalee 
Spanish 1
I reallly need help with these, please! 29. ¿____qué hora empieza la clase de ciencias? a. De b. A c. Para d. Pero 30. Tengo _____ cuadernos a. un b. mucho c. veintidós d. una B? Or C..? 31. La clase de ciencias de la salud empieza ____ las dos a. son
asked by mysterychicken 
english
When the monarchy was restored in England, the theaters were almost immediately closed. False?
asked by danny 
Grade 11 Math
simplify √(x^5y^8) the answer is x^5/2y^4 does it matter if 5/2 is replaced with 2.5? x^2.5y^4 its the same thing right?
asked by priya 
English
heres another the last part. Classify as Simple, compound, complex or compound complex. complex13) The burden of proof should be reversed; that is, no one should be allowed to release any substance into the air until it is proved harmless. compound14)
asked by Tom Jameson 
science/math
One multicellular organism is a cube. Each of its sides is 3cm long. Each of its cells is 1cm to the third power.How many cells does it have? If each side doubles in length,how many cells will it then have?
asked by anna 
chemistry
which of the following sets of quantum numbers (n,l,ml,ms) describes the electron which is most easily removed when a sodium aton is converted to a sodium ion? a)2,1,0,1/2 b)2,0,0,1/2 c)3,1,1,+1/2 d)3,2,1,1/2 e)3,0,0,+1/2 can anyone explain this so I
asked by lavonne 
US History
what were the bargaining agents, collectively bargaining for, (during the second new deal FDR)? were they bargaining for workers rights like more pay/ less hours? But, then what did the industry leaders gain in return if they gave more pay?
asked by Amy 
chemistry
The electron configuration of the outermost electrons of the halogen group is: a)ns2np7 b)ns1 c)ns2np5 d)ns2np6(n1)d7 e)ns2np6
asked by lavonne 
Business Computer Information Systems
In 3–5 sentences, discuss special considerations for using blogs and wikis in research. I don't understand this question good can you guys please help me understand what i am sopose to do.
asked by yelena 
Statistics
How do I do this? I am very lost. If you live in California, the decision to buy earthquake insurance is an important one. A survey revealed that only 133 of 337 randomly selected residences in one California county were protected by earthquake insurance.
asked by monica 
5th grade math
county festival charges 50.00 to perform, high school gymnastics team performs charging 2.50 per person. 113 people attend. The team owes the 50.00 plus 62.50 for repair to their paralell bars. How much profit does the team make? and it is divided equally
asked by tryston 
physics
A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high.If the projectile lands on top of the cliff 6.5 s after it is fired, find the initial velocity of the projectile ( (a)magnitude and (b)direction ). Neglect
asked by bobjahng2 
chemistry
which of the folllowing species is not isoelctric with any of the others? a)V3+ b)Ca2+ c)Ar d)CL e)S2
asked by lavonne 
Chemistry
How much vinegar at 5% acetic acid concentration would be required to neutralize 100mL of 0.01 M NaOH? (Assume a density of vinegar to be 1.01g/mL)
asked by Angie 
algebra
write the slopeintercept equation for the line that passes through(4,3) and has slope 5/4.
asked by ann 
statistics
Come up with a unique way to choose random samples from a specific data set, also explain how you will assign each data item and how each item will be selected
asked by Anita 
5th grade
when crating an interval for a requncy tablehoe do you determine the interval number
asked by omar 
Chemistry
A mixture of hydrogen and oxygen gas has pressure of 1.60 atm. Partial pressure of oxygen is 304 mmHg atm, what is the partial pressure of hydrogen?
asked by Sandra 
chem
Determine the mass(in grams) of each of the following compounds. a) 0.709 mol magnesium fluoride i got 30.7grams but it was wrong. id appreciate the help! thanks! also if i end up getting the help i have a couple other questions
asked by hannah 
science
The enthalpy of combustion of methanol is 711 kJ/mole. What mass of methanol must be completely burned in oxygen to produce 71.1 kJ of energy?
asked by Anonymous 
Chemistry
If 20.0 g of N2 has a volume of 4.00 L and a pressure of 6.0 atm, what is its temperature?
asked by Sandra 
geometry
how do you find if the perimeter of a triangle EFG is 32, triangle EFG scalene, isosceles, or equilateral?
asked by Tyaalor 
algebra
Hello. Three quick questions that I have worked on just need confirmation. 1. I need to find the intercepts and then use them to graph the equation. 2y6=2x; I have x = 0 for y  intercept; 2y6=2(0); 2y6 = 0; 2y = 6; y = 3. I set y at 0 also. 2 (0)  6 =
asked by Amy 
Chemistry
What mass of phosphine gas yields 3.5x10^6 moles of PH3
asked by Cathy 
reading
i need to write synonyms OF BURNINGfire FROSTYicy SEARCH FORfind PAY FORinvite _______________________________________ WRITE ANTONYMS OF RETURNtake HOTcold FREEZINGbunring ATTICDbasement
asked by 3 grade 
Math
Marisss completes 4 to 6 jigsaw puzzles a year. Estimate how many years it will take Marissa to complete 20 puzzles.
asked by Anonymous 
Chemistry
Calculate the density of F2 gas at 27 degree Celsius and 1.00 atm pressure?
asked by Amber 
type keyboard
I was wondering how you can insert the special symbol meaning section that looks like two letter s's stacked on top of each other. I have never used this character before on a computer, but I could like to know how to do so because I intend on using it for
asked by prelaw club member 
Spanish 1
35. "¿_____hablas?" "Pues, inglés y español." a. Cómo b. Qué c. Dónde d. Quién B? 37. Pues, necesito _____ carpeta para la clase de español. a. un b. dos c. una d. mucha C? 38. "¿Estudian Uds. para la clase de matemáticas?" "No, _____ para la
asked by mysterychicken 
space
A _ has a long life cycle Theme:space and planets
asked by Megan Sexton 
Chemistry
Dr. Bob get the use PV=nRT just stuck on setting up the problem help!
asked by Sandra 
health
how are babies made(in depth)
asked by joshkia 
History
How should I compare the senate and house of representative content and discuss why the thier content differs and why it is similar
asked by Carnita 
Flec
what is a prime factor? How do I find the prime factor?
asked by Dan 
chem
How many moles of O are in 13.5 mol Fe(NO3)3? i got 7.32e25 but soon realized that is totally wrong.
asked by hannah 
MATH
I NEED TO NO HOW TO DETERMINE WHETHER EACH RELATION IS A FUNCTION
asked by CHARLEY 
Physics
Using newton's law of universal gravitation and the following data calculate the theoretical value of the acceleration due to gravity on mars. Mars Mass= 6.4185x 10^23 kg Radius (equatorial)= 3.3962x 10^6m
asked by Amy 
physics
problem says that a cannon ball is fired at a 30 degree angle off a 10 meter high wall at 80 m/s. Use work and energy to find it's impact speed. I worked out this out with the equation: (1/2)(mass)(initial velocity)^2 + mgy = (1/2)(mass) (final velocity)^2
asked by Taylor 
chem
Ka=1.8x10^5. How do you calculate the value of pKa?
asked by Vivian 
physics
Winds in a certain city can attain sustained speeds of 45 m/s when the jet stream descends during spring. Approximately what force does a roof with an area of 200 m^2 experience due to the Bernoulli effect, assuming air flow is completely laminar? Density
asked by Anonymous 
math
what is the greatest number of times you would regroup when multiplying two 2digit factors?
asked by aj 
College Chemistry
Stuck on plugging info into formula, please show set upAt 10 degrees C carbon dioide gas has volume of 25.5 mL under pressure of 758 mmHg, what would volume of CO2 be at STP?
asked by Sandra 
CHEMISTRY
A single drop of water is injected into a balloon at 25C that contains ammonia, at 1 atm. What will happen to the V of the balloon?Assume Henry's constant is ~0.02 atm/M
asked by Brittney 
Calculus
How would you find the derivative of this implicit function? 1+x=sin(xy^2)
asked by John 
calculus
Tower 1 is 90 ft high and tower 2 is 40 ft high. The towers are 200 ft apart. A guy wire is to run from point A to the top of each tower. [See a picture of this situation on page 274 of the textbook.] How many feet from tower 1 should point A be so that
asked by Yu 
algebra
explain how to show five is less than a number using an expression
asked by paris 
English
10th grade English question: In the sentence: The boys playing football look tired, what would the Participle Modifier, and Object of the participle be? I have been trying to figure it out on my own but I'm not sure if my answers are right. What I came up
asked by Amy 
calc bc
who do you solve this?/what is this equal to? I don't understand... antiderivative [(ln(2+sin(t))] dt THANK YOU!
asked by APpreciative student 
Chemistry
What anhydrous salt has a molecular mass of 258g/mol? I believe the results from my experiment were incorrect and i can not figure out the general formula for the hydrated salt with a molecular mass of 258g/mol. please help
asked by Ash 
Chemistry
You weigh out 10.000 g of a mixture of NaHCO3 and Na2CO3 and add an excess of HCl. After the reaction is over, you evaporate off the water and collect the solid, which is found to weigh 9.400 g. How many grams of the original mixture were NaHCO3?
asked by Vova 
Chemistry
You weigh out 10.000 g of a mixture of NaHCO3 and Na2CO3 and add an excess of HCl. After the reaction is over, you evaporate off the water and collect the solid, which is found to weigh 9.400 g. How many grams of the original mixture were NaHCO3?
asked by Vova 
chemistry
which of the following is not paramagnetic? a)Co3+ b)Se2 c)Gd (element 64) d)Ni e)Gd3+
asked by lavonne 
math
Please help me do these problems. I don't understand how to do weighted averages. Mrs. Gleason invested a portion of 32000 dollars at 9% interest and the balance at 11% interest. How much did she invest at each rate if her total income from both
asked by brian 
english
Is the grammar correct? This is an example of imagery because it appeals to the senses of sight and hearing. Also gives the readers (does there need to be an apostrophe in readers) a detailed description of Mrs. Hirsch's son.
asked by heather 
Spanish 1
Need help answering these two: 34. No está álli. Está _____. a. aquí b. en la octava hora c. al cine d. ahora 36. No tengo un bolígrafo. Tengo ____ lápiz. a. una b. el c. la d. un Thanks! MC
asked by mysterychicken 
math
Estimate each quotient. Write the fact you use? 58 divided by 3
asked by Batul 
english
How/Why is this a metaphor? Once more in her bed beside the warm cocoon of her sister
asked by heather 
Math
how long does it take for a deposit of $1400 to double at 7% compounded continously it would be awesome if you could also tell me how to do it...
asked by steven 
English
In the sentence: Joe, injured by the ball, left the game. Would this be right? ParticipleInjured, ModifierJoe, and the Object of the participleball
asked by Amy 
physics
A boulder with a mass of 2,500 kg on a ledge 200 m above the ground falls. If the boulder's mechanical energy is conserved, what is the speed of the boulder just before it hits the ground?
asked by Adam 
similar figures
The rule (x,3/4y) is applied to a polygon. The given point is on the original polygon. Find the image of the point (6,8)
asked by Jacob 
Physics
A hot air balloon starts at its launching station and it goes at a horizontal speed of 2.7 m/s and a vertical wind of 1.1 m/s. Once it reaches an altitude of 202 m, it stays at that altitude for 10.3 s, which is when it drops a sandbag. How far will the
asked by Ashley 
math
Please list the common multiples of 63 and 100.
asked by Bell 
Chemistry
What is the structure of SN? I thought .:S=N:: or ::S=N:. but both were deemed wrong by the homework software we have... help!
asked by Matt 
history
How did Americans and Indians react to the Sand creek massacre and the Wounded Knee Massacre?
asked by cierra 
Chemistry
What are all the resonance Structures of Carbon Tetraoxide?
asked by Vinny 
Science
The gravitational force of any object near Earth is _____? A unknown B friction C Newton's First Law D 9,8m/s2 When you walk across a bridge, the _____ force of the bridge keeps it from breaking. A gravitational B normal C strong D weak A (n)
asked by Jacob 
Chemstry
What is the structure of N4O, where the 3 nitrogen bonds have different bond lengths and the N=O bond is a double bond. I just don't get it
asked by Phil 
Literature
Can anyone point me in the right direction? I need to know which play made the line Drama Kings and Queens unite!. I have tried using several search engines with no avail. Just a hint at the author would be good.
asked by Samuel 
chemistry 110
Pure water in contact with air has a higher conductivity than the same water that has had nitrogen gas bubbled through it. Why?
asked by sara 
trig. identities
sin2x+sin2y=2sin(x+y)cos(xy) Please helpp mee!! thank you sooo much really!!
asked by Sabrina 
economics
wHAT IS VERTICAL INTERGRATION
asked by SYLVIA 
ECONOMICS
WHAT IS HORIZONTAL INTERGRATION
asked by SYLVIA 
similiar figures
the rul (x,3/4y) is applied to a polygon. Is the image similar to the original polygon?
asked by Jacob 
algebra
Write the slopeintercept equation for the line that passes through(4,3) and has slope 5/4
asked by franklin 
chemistry 110
Write the overall balanced equation for NaOH to form soluble Na2SO4 along with H2O as products.
asked by sara 
chemistry 110
Write the net ionic equation for NaOH to form soluble Na2SO4 along with H2O as products.
asked by Kim K 
history
What did Americanization reveal about white Americans view of Native Americans?
asked by Ashley 
algebra
if y = x19, what is the value of x when y=34?
asked by william 
history
Why was the destruction of the buffalo significant to the lives of Native Americans on the Plain?
asked by lala 
physics
Mouse steals piece of cheese by rolling across the floor with a force of 5.0 N. With what acceleration does the cheese move? At what speed is the cheese rolling after 10 seconds?
asked by Abby 
physics
Most sphygmomanometers use mercury. How tall would the manometer tube need to be if it were filled with water instead? It might need to measure a blood pressure as high as 300 mm Hg.
asked by Jamie 
algebra
.identify what each leters represents
asked by william 
Writeacher
Writeacher I have to do a paragraph about the poem "Success". This is what I have to do; In paragraph form, explain why you agree or disagree with Emerson's description of the concept of being successful in "success". Ralph Waldo Emerson's poem "Success",
asked by Angelina 
algebra
.identify what each leters represents. the perimeter of a rectangle is twice its length plus twice its width
asked by william 
Chemistry
How many liters of CO2 would be produced if 32 grams of CH4 are combined with oxygen?
asked by Renee 
Probabilities
1.) two marbles are drawn without replacement from a bowl containing seven red, four blue, and nine yellow marbles. what is the probability that at least one is red? 2.)a card is drawn from a standard deck of 52 cards. what is the probability that the card
asked by J 
math
Set up and Label the proportion Answer and round your answer to the nearest whole number. A 6 ft tall tent standing next to a cardboard box casts a 9 ft shadow. If the cardboard box casts a shadow that is 6 ft long then how tall is it?
asked by Kylie 
Probabilities
1.) two marbles are drawn without replacement from a bowl containing seven red, four blue, and nine yellow marbles. what is the probability that at least one is red? 2.)a card is drawn from a standard deck of 52 cards. what is the probability that the card
asked by J 
Biology
a) How do CO2 and O2 levels in the blood regulate breathing movements? b) Explain how these mechanisms are a good example of homeostasis. Help me please :(
asked by Leah 
math
The lengths of the sides of a triangle are 4in.,14 in., and 16 in.If the longest side of a similar triangle measures 40 in., what is the length of the shortest side of this new triangle?
asked by Anonymous 
english
Ethos Writing Assignment: Imagine that you need to convince your audience that you have ethos in order to construct your argument. What qualities or traits do you have that create your ethos? What experiences do you have the give you authority and
asked by y912f 
Chemistry
Hydrofluoric acid etches glass by reacting with the silica in it according to the following equation. H° = 54.5 kJ and S° = 436.5 J/K Calculate G° at 25°C for this reaction.
asked by Melissa 
Probabilities ~~
1.) a computer package sale comes with two different choices of printers and four different choices of monitors. if a store wants to display each package combination that is for sale, how many packages must be displayed? make a tree diagram showing the
asked by Kay 
Chemistry
What is the pH of the solution obtained when 125 mL of 0.614M NaOH is diluted to 16.0 L with water?
asked by Jenna 
Chemistry
Ethanol burns to produce 1300.0 kJ/mol and has a heat capacity of 65.6 J/mol·K. If Dr. Porter has 1.00 L of liquid ethanol (density = 0.789 g/mL), what is the minimum mass of fuel that should be removed and burned to heat the remaining ethanol from 25 °C
asked by Melissa 
Statistics
How do you make a tree diagram for this? (and in general) 1) of the voters in a certain city, 40% are republicans and 60% are democrats. among the republicans, 70% are in favor of a particular bond issue whereas 80% of the democrats favor the issue. if a
asked by Lo 
Chemistry 110
What anhydrous salt has a molecular mass of 258g/mol? I believe the results from my experiment were incorrect and i can not figure out the general formula for the hydrated salt with a molecular mass of 258g/mol. please help
asked by Ash 
chemistry
Which halogen can form only one oxidation state other than zero?
asked by anna 
chemistry
What is the effect of the following on the separation of the mixture(hexane and toluene)? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate separation technique is
asked by Anonymous 
7th grade
A force used to lift a 12kilogram mass to a height of 8 meters in 2 seconds does 1040 joules of work. QUESTIONS: A;How much force is used? B;What power is developed?
asked by MATHEWS 
math
1234 + 607= 47,019 + 21,598= 405,679 + 319,477= ____________________ 1234  607= 47,019  21,598= 405,679  319,477=
asked by jojo 
Social Studies
Compare the different diplomacy styles of Presidents roosevelt, Taft and wilson
asked by Kyler 
math
make a tree diagram for: two methods A and B are available for teaching a certain industrial skill. the failure rate is 20% for A and 10% for B. however, B is more expensive and is therefore only used 30% of the time (A is used the other 70%). A worker is
asked by Anonymous 
geometry/algebra
I asked this question yesterday, and I'm trying to understand it since I got the wrong answer  please explain: You need to make a soda can with a volume of 29 cubic inches. Find the surface area. calculate the following: a) How much material is needed if
asked by Nancy 
Social Studies
How did the Pilgrims become friends with the Wampanoag?
asked by Kyleigh 
algebra 2
(4ttatt2bt+5)(cttt+2tt6t+3)=ttt2t+d ; i need to find what a,b,c, and d are. the variables like tt's mean t squared just so u know.
asked by sydney 
Physics please answer the a) for me :(
Ill do the rest. A ball was thrown up at 25.0 m/s. It was released when it was 2.0 m above the ground. a) For how long did the ball rise? b) at the top of its trajectory, how far above the ground was it? c) what was the ball's speed, direction and height
asked by Michael 
math
1)3/4+x >1 is it x>1/4 ,x< 1/4? 2)6x+8 > 4 is it x>2/3 ,x< 3? 3)x+0.5=0.25 is it x=o.25,0.75 4)7x>2 is it x>5 ,x
asked by check this please!!! thank you 
Math Cal
Use implicit differentiation to find an equation of the tangent line to the cardioid at the point (0, 0.5). x^2 + y^2 = (2x^2 + 2y^2  x)^2
asked by Alex G 
math
how often does a leap year occur? what are al the prime numbers less then 12. what is the eighth multiple of 32? is the last digit of the multiples if 4 odd or even? what are the six factors of 12? what are the factors of 16. two factors of 20 are 1 and
asked by jojo 
statistics
Use Bayes' theorem to solve this problem. A storeowner purchases stereos from two companies. From Company A, 550 stereos are purchased and 1% are found to be defective. From Company B, 850 stereos are purchased and 6% are found to be defective. Given that
asked by Marcella 
science
Words to use: Accelerate  Sliding  Brake  Friction  Slipping  Inertia Velocity  Wheel  Strength  Static  Terminal velocity Questions 1. An object will ____?____ when the net force is not zero. 2. ____?____ will never speed up an object. 3. The
asked by Jacob 
general psychology
What are the three learning theories
asked by diane 
Math
simplify the expression using the properties of rational exponents 13 to a power of(5/4)
asked by Dally 
math
what final scores, between 1 and 30, are not possible for a football team to make?
asked by rusty 
math
write the sum. show the makeaten fact you used. 9 + 7 = ______________ 10 +____________=_______________
asked by mary 
Angular Momentum
2.0 kg particlelike object moves in a plane with velocity components vx = 30 m/s and vy = 35 m/s as it passes through the point with (x, y) coordinates of (3.0, 4.0) m. (a) What is its angular momentum relative to the origin at this moment? kg·m2/s k
asked by Xavier Hernandez 
physics
Need equation: Mass of 4.24 kg acted on by external force that reduces velocity from 8.5 m/sec to 4.1 m/sec in 3.0 sec. Find magnitude of the retarding force?
asked by Abby 
Spanish 1
Need help answering these two: 34. No está álli. Está _____. a. aquí b. en la octava hora c. al cine d. ahora 36. No tengo un bolígrafo. Tengo ____ lápiz. a. una b. el c. la d. un Thanks! MC
asked by mysterychicken 
Derviatives
Differentiate the function. f(x) = sin(5 ln x)
asked by Michael 
WriteacherRepost
Writeacher I have to do a paragraph about the poem "Success". This is what I have to do; In paragraph form, explain why you agree or disagree with Emerson's description of the concept of being successful in "success". I kind of rethought and rewrote my
asked by Angelina 
french
is this question correct? Tiffany, pensetu Monica est intelligent?
asked by raluca 
Chemistry
How many possible values for pair l and m_{l} are there when n_1 = 3? How many possible values for pair l and m_{l} are there when n_2 = 5? Express your answer as an integer. I understand the following solution: "we know that for a particular value of n ,
asked by Bobby 
chemistry, Please help.
Please tell me where I can find the articles ( free) to represent the Setvens rearrangement and Favorskii rearrangement. I have to have them for presentation but I have not taughed about these reaarangenment yet. I hope somebody on Jiskha will help me to
asked by bun 
cal
Differentiate the function. f(x) = sin(7 ln x)
asked by JJ 
Chemistry
How many atoms of carbon are found in 5.94 grams of acetic acid?
asked by Tom 
Science
What are ten land biomes and animals that live in each one?
asked by Jan 
Physical Science
What is the Mechanical energy of a 500kg rollercoaster car moving with a speed of 3 m/s at the top of a hill that is 30 m high?
asked by Adam 
physics
A bus traveling 85 km/hr is brought to a stop in 135 m. If the mass of the bus is 2250 kg, what was the retarding force provided by the brakes? Formula please
asked by Bob 
English
(Continuing my older English post) Okay, So I understand what it means now. But I just don't know how to write it out. I've been trying to write this for an hour now. I'm a Muslima, I'm a also a female, I guess those are both tthings I could write. But I
asked by y912f 
chem
supose 1.25 mol of N2 and 50.0g of O2 are moxied together. a)which one is the limiting reactant? b) what is the maximum mass in grams of NO2 that can be produced from the mixture? N2(g) + 2O2(g)=2NO2(g) ***please just show me how to set up the equations I
asked by julia 
International Business
Lunch and Learn PowerPoint Presentation MUST BE ORIGINAL, PROPER IN TEXT CITATIONS, PROPER REFERENCE PAGE, APA FORMAT AND MEET ALL GUIDELINES BELOW, PLEASE.... •Consider the following scenario: You have been asked by the director of your department to
asked by Happyy4uu 
International Business
MUST BE ORIGINAL, INCLUDED PROPER APA FORMAT, REFERENCE PAGE, PROPER IN TEXT CITATIONS, AND MEET ALL GUIDELINES LISTED BELOW, PLEASE. EXPORT BUSINESS PLAN TO MEXICO : •Consider the following scenario: You own your own company and would like to go global.
asked by Happyy4uu 
Physics: Angular Width. Why is my answer wrong?
A beam of yellow laser light (590 nm) passes through a circular aperture of diameter 5.0 mm. What is the angular width of the central diffraction maximum formed on a screen? I can't seem to get this answer right. I don't think I am finding the first part
asked by Sar 
algebra
Tom earns d dollars per week. How much does Tom earn in 10 weeks?
asked by John 
Chemistry
The estimated lattice energy for is CsF2+2347kj/mol. Use the data given to calculate an overall energy change (in kilojoules per mole) for the formation of from its elements. Ea for F = 328 E11 forCs = +375.7 E12 for Cs = +2422 Heat of sublimation for Cs
asked by diane 
stat
a sample of 150 adults is composed of 100 women and 50 men. estimate the standard error of the proportion for the female population
asked by suzanne 
Physics
A cart initially at rest on a horizontal floor requires a 365N horizontal force to set it in motion. We know that the coefficient of static friction is 0.64. What is the mass of the cart?
asked by Taylor 
Science
Compared to the number of protons how many electrons does the carbonate ion have
asked by Blah 
Writeacheranother repost
Ralph Waldo Emerson's poem "Success” is an apt description of being successful because each line in the poem reflects motivation upon the reader. His poem tells all readers to be responsible, respectful, and strong in life. It gives them the willpower to
asked by Angelina 
physics
A person has a mass of 50.0 kg. What is the pressure they exert on the blades of their ice skates if each skate blade is 15.0 cm long and 5.00 mm wide?
asked by Marcy 
Calculus
The length of a rectangle is increasing at a rate of 9 cm/s and its width is increasing at a rate of 7 cm/s. When the length is 15 cm and the width is 10 cm, how fast is the area of the rectangle increasing?
asked by JJ 
physics
Two children seat themselves on a seesaw, the one on the left has a weight of 400N whlie the one on the right weighs 300N. The fulcrum is at the midpoint of the seesaw, if the child on the left is not at the end but is 1.5m from the fulcrum, and the seesaw
asked by James 
math
The ratio of the number of mints in Jar A to that in Jar B was 8 : 5. After 1/4 of the mints in Jar A were sold, there were 120 mints in Jar A than Jar B. How many mints were there in Jar B?
asked by crystal 
Chemistry
How do I predict whether the equilibrium lies to the right or left of an Acidbase equation?
asked by Ana 
History
how did the first three presidents (or any groups of presidents) affected the powers of the presidency
asked by Carnita 
math
How to factor this equation? 4x^3yz^4 12x^2y^2z2x^2yz
asked by Wajeeha 
physics
hey, i was wondering if someone could explain and help me with this problems. please and thank you! A person holds an object of mass m = 4 kg on the palm of the hand with the arm stretched as shown in the attached figure. Use the torque equilibrium
asked by daniel 
calculus
Assume that f is an integrable function satisfying the following for all b > 0
asked by Anonymous 
english
What is the past tense of flying
asked by Vivien 
Spanish 1
44. Los campañeros de clase _____ mucho. a. estudias b. estudian c. estudiar d. estudiáis B? 45. ¿Cómo está, _____ Fernandez? a. el señor b. señor c. la señora d. la profesora Either A or B.. 46. "¿Qué necesitas para la clase de inglés?"
asked by mysterychicken 
algebra
earth tothe sun is 93000000 how many of you stacked on top of yourself would it take to reach the sun
asked by lateek 
Physics
How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?
asked by Rose 
visual art
What are the elements of design?
asked by Vivien 
4th grade
when I am rounded to the nearest ten I am 50. The difference between my digits is one. I can be two different numbers. Who am I
asked by Laurin 
chemistry
0.361g of an unknown liquid occupied a volume of 250.0 ml at 758mm Hg pressure and 100 degrees Celsius. what is the molar mass?
asked by khela 
western experience
Can someone please check my answers? 1. In the early 1970s the only European nation capable of meeting its own oil production needs was A. Great Britain B. France C. Germany D. the soviet union E. Spain D. The soviet union 2. Which group has seen its
asked by Ashley 
Math
How do you multiply two mixed numbered fractions?
asked by Erin 
math
set up and label the proportion A 6 ft tall ten standing next to a cardboard box casts a 9 ft shadow. If the cardboard box casts a shadow that is 6 ft long then how tall is it?
asked by lilly 
History
who in 1978 became the first person born in Antarctica
asked by Rosa 
msth
what equation can you use to extend the pattern? input 2,5,8,9,11 and out is 1,7,13
asked by Anonymous 
4th grade math
when I am rounded to the nearest 10 I am 270. The digit in my ones place is 4 more than the digit in my hundreds place.
asked by Laurin 
Chemistry
Which would be more effective in lowering the freezing point of 500 g of water? 100 g of sucrose or 100 g of ethyl alcohol?
asked by Sarah 
physics
in a racing competition a car is driving at 69km/h and the driver can complete 8 full circles in 6 mins. calculate the radius of the circular path in meters?
asked by Shea 
CHEMISTRY..please help..thanks
A laboratory assistant needs to prepare 325 mL of 0.110 M CaCl2 solution. How many grams of calcium chloride will she need?
asked by Jasmin 
Math Mania
A fruit stand carries apples, oranges, lemons, and pears. There are twice as many apples as oranges and 3 times as many lemons as pears. If there are 3 more oranges than pears, and p represents the number of pears, which of the following expressions
asked by Anonymous 
Repost of paragraph
Ralph Waldo Emerson's poem "Success” is an apt description of being successful; each line expresses its own special meaning. His poem tells all readers to be responsible, respectful, and strong in life. It gives them the willpower to be sympathetic and
asked by Angelina 
4th grade math
When I am rounded to the nearest ten I am one thousand. I am the same when read forward or backward. I can be two different numbers who am I
asked by Laurin 
Physics
A cart loaded with bricks has a total mass of 28.5 kg and is pulled at constant speed by a rope. The rope is inclined at 28.1 ◦ above the horizontal and the cart moves 13.9 m on a horizontal floor. The coefficient of kinetic friction between ground and
asked by Shakib 
math
A map has a scale of 3 cm : 18 km. If Riversaid and Smithville are 54 km apart, then they are how far apart on the map? how would I set the up as a proportion?
asked by lilly 
Trig math
PLEASEE HELPPMEEE!!!! cot2x+sec2x=tan2x+csc2x and 1+2sinxcosx/sinx+cosx=sinx + cosx
asked by Sabrina 
math
Which of the given numbers are composite? 0,1,15,19,23,31,49,55,59,87,91,97,103, 105
asked by carmela 
English
Can someone please proofread my essay on snitching and help fix any grammar error to make it flow better. Did I correctly use the word liabilities? Snitching is the cause of a lot of problems that go on in the work environment today. A snitch is “a
asked by Keisha 
Algebra 1
A finance company offers cheaper interest rates if you borrow a larger sum of money for shorter time period. A borrower is offered $7000 at 12% or $10080 at 10%. If the tome for the lager loan is 6 months less but the total interest is the total interest
asked by Lola 
College Chemistry
Predict the signs of delta H (Enthalpy) and delta S (Entropy) for the evaporation of water at 85 C.
asked by James 
math correct or not correct?
Find the distance between riverside and milton if they are 12 cm apart on a map with a scale of 4 cm : 21 km The final answer is x= 63 km?
asked by lilly 
5th grade science/ colloids
what are some examples of colloids? like a mixture,compound or sometin.... im looking for something like a colloid is water and oil mixed together and so on. thx :)
asked by emily 
physics
Two particles of mass m1 = 1.0 kg and m2 = 2.6 kg are traveling with velocities v1 = 4.9, and v2 = 2.5 as shown in the figure below. What is the total momentum of this system? Be sure to give the magnitude and direction of the momentum. magnitude 1 kg ·
asked by cody 
Geo Triangles
triangle xyz. find all possible lengths of xy given: xz:9in yz:5in given: xz=1 yz=13
asked by Skylar 
physics
an arrow is fired horizontally at a target 30 meters away. The bullseye is at the same level as the bow. The initial speed of the arrow is 50 m/s. How long does it take to get to the target? How far below the bullseye does it fall?
asked by Lola 
HISTORY
what were some causes and effect of the Balle of the Bighorn?
asked by ............... 
4th grade math
When I'm rounded to the nearest 10 , I'm 600. The digit in my tens place is 1 more than my ones digit. Who am I?
asked by Laurin 
physics
A 350 piano slides 3.5 down a 33 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure ). The effective coefficient of kinetic friction is 0.30. Calculate the force exerted by the man.
asked by Anonymous 
math
What is the time to double when the initial investment is $1000 and the annual rate is 3.5%
asked by lisa 
Chemistry
Hey guys can someone help me with calculating masses of reactants and products ..... And also calculating limiting and excess reagents , I can't remember all the steps so I wanna know is there an easy way to remember it, I allways get confused and unit
asked by Saria 
Physics
Please help! How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?
asked by Rose 
English
between hobbes and locke whose philosophy would creon follow ? antigone?
asked by Janet 
math
Ann is five years older than twice her brother Dan's age, a. Write an algebraic expression to represent the sum of their ages.
asked by april 
math
A 6.5 ft tall car standing next to an adult elephant casts a 33.2 ft shadow. If the adult elephant cast a 33.2 ft shadow that is 51.5 ft long then how tall is it. Would it be 6.5/33.2 = 51.5/x?
asked by lilly 
math
matt thinks that all the values of x and y that absolute value   would make this statment true x+y= x+y if x is 5 and y is 6 then replacing x and y for the values would look like this: x+y=5+6= 11=11 x+y= 5+6=5+6=11 Is matt a
asked by kayla 
Managerial Economics
5. Call Us demand function is Q = 20 – 0.2P and the MC = 10 + 5Q. Given that TFC = $2,000; a) Derive an equation for the TC. b) Calculate the profit at the profit maximizing level.
asked by Hydie 
English
Did anybody read life of pi if yes can someone tell me what happen in part one .... I read it but is alittle confused with pi because he believes in three religion etc. Thank u
asked by Tabi 
Managerial Economics
4. Explain how each of the following events will affect the average and marginal cost curves of a firm : a) a decrease in labour rate; b) an increase in rent for a facility; c) stricter environmental regulation requiring installation of scrubbers on
asked by Hydie 
Western Experience since the sixteenth century
Ms. Sue can you please help me? I have been searching for this answer and can not seem to find it. What forces have been made for the increasing unity since the continent of Europe has become tightly integrated? Were the landmarks that charted its path
asked by Michelle 
4th grade math
when i am rounded to the nearest hundred, i am 3,300. the difference between my ones and thousands digits is 1. my tens digit is the same number as my ones digit. I can be two different numbers. who am i?
asked by Laurin 
math
a 6.5 ft tall car standing next to an adult elephant casts a 33.2 ft shadow. If the adult elephant casts a shadow that is 51.5 ft long then how tall is it?
asked by lilly 
chemistry
given that the molecular weight of mg(oh)2, magnesium hydrogen, is 5832g, what percentage of this compound is oxygen?
asked by Musawar 
Chemistry
What mass of H2O is required to form 1.2 L of O2 at a temperature of 310 K and a pressure of 0.950 atm? 2H2O (l) > 2H (g) + O2 (g)
asked by Lisa 
chemistry
given that the molecular weight of mg(oh)2, magnesium hydrogen, is 5832g, what percentage of this compound is oxygen?
asked by Musawar 
chemistry
given that the molecular weight of mg(oh)2, magnesium hydrogen, is 5832g, what percentage of this compound is oxygen?
asked by Musawar 
chemistry
The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the rootmeansquare speed of 238UF to that of 235UF6 at constant temperature?
asked by Jess