Questions Asked on
March 3, 2015

Chemistry
For the titration of 50.00mL of 0.1000 M ammonia with 0.1000 M HCl, calculate the pH (a) before the addition of any HCl solution (b) after 20.00mL of the acid has been added
asked by Anonymous 
Chemistry Dr. Bob
Balanced Equation: 2PbS+ O2 > 2PbO +2SO2 How many grams of oxygen are required to react with 0.124mole lead(II) sulfide? Ummmm.. I tried to convert it to grams? 0.124 mol * molar mass of PbS (239.3) = 29.67 g of PbS then tried to plug it into the
asked by Jennie 
English
1. It rains more often. 2. It rains oftener. 3. It rains most often in this area. 4. It rains oftenest in this area.  Which ones are grammatical? Are all grammatical? Which ones are commonly used?
asked by rfvv 
quant
8 cars are in race and different timing for each car then find avg speed.
asked by mamatha 
Chemistry Help
How many moles of hydrogen atoms are there in 178 mL of 0.20 M H2SO4? Write your answer in scientific notation. Please help
asked by annoymous 
English
1. village:a very small town in the countryside 2. village:a very small town in the country 3. He lives in the country. 4. He lives in the countryside.  Are 'country' and 'countryside' the same in meaning? Can they
asked by rfvv 
English
1. If I miss so much school again, how can I become a teacher? 2. If I miss so many schools again, how can I become a teacher?  Which one is correct? Is #2 grammatical?
asked by rfvv 
Health
Powerful way to improve powerful drinkers access to treatment is to make____part of primary care
asked by Anonymous 
chenistry
this is confusing me so bad!! Nitrogen gas reacts with hydrogen gas to produce ammonia by the following equation: N2(g)+3H2(g)→2NH3(g) If you have 5.79g of H2, how many grams of NH3 can be produced? I said, 2/3 *5.79 = 3.86 but that's not the answer.. it
asked by Jennie 
physics
An object uniformly accelerates at a rate of 1.20m/s^2 east. While accelerating at this rate, the object is displaced 470.4m east in a time of 28 s. What velocity did this object reach in this time ? I used Vf=Vi+at which will be Vf=(1.20)(28) but i feel
asked by Dania 
Math
provide a table of six values that represent a linear relation? 6 values mean that 6 number on each side x and y value?
asked by dana 
math
Please help me on linear relation. I have tries but I am really stuck on the creating table and graphing. 1. provide a table of six values that represent a linear relation. All the yvalues must be less then zero. 2. provide a table of six values that does
asked by d 
Chemistry
Consider two noninteracting Fermions (halfinteger spin) confined in a “box” of length L. Construct the antisymmetric wave functions and compare the corresponding groundstate energies of two systems; one with particles of identical spin and the other
asked by lolo 
political theory
I don't have an assignment due, but I'm having trouble understanding the themes that are in the Persian Letters by Montesquieu. Has anyone read them? I'm in college. I'm having trouble understanding the Harem sequence, and these themes: lack of self
asked by bayley 
maths
If each glass is 250ml,how many glasses can I fill with 2ltres of orange juice?
asked by deizyah 
Chemistry
What is the concentration of Na+ ions if 35.0 mL of 2.50 M NaOH is reacted with 47.0 mL of 1.50 M HCl? I did M=Moles/Volume Moles=M*V Moles=2.50M*0.035= 0.0875 Am I right? If I am right, I don't know what to do next. Please help
asked by annoymous 
Math
Mr. Tankard’s minivan has a 21 gallon tank. He can travel 354 miles on one tank of gas. How many miles per gallon does the minivan get? How many tanks of gas will he need to travel 870 miles?
asked by Sam B 
jinah coloege
how many electrons does a charge of 1.63 μc represent
asked by ali amir 
utu secondary school papuanew guinea
A given mass of air has a volume of 6.0l at 1 atom.what volume will it occupy at 190mm hg if the temperature does not change?
asked by charlie 
math
1.39 1.61 1.6 1.53 1.62 1.61 1.64 1.59 1.62 1.51 1.52 1.6 the mean height of the students is 1.57 meters. what does it imply? a.) there are more students whose heights are below 1.57 meters b.) the average height of the students is 1.57 meters. c.) most of
asked by chevlios 
math
The range of the of the ages of the Glee club officers is 5. this means that a.) the difference of all ages of the officers is 5 b.) one qualifies to be an officer if he is 5 yrs below the mean age. c.) one qualifies to be an officer if he 5 yrs above the
asked by chevlios 
math
the sum of the squares of two consecutive numbers is 265. find the numbers
asked by chevlios 
Physics
A chair of weight 75.0N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 45.0N directed at an angle of 40.0¡ã below the horizontal and the chair slides along the floor. Using Newton's laws, calculate
asked by Boxiang 
Calculus, HELP!!!!!!!!!
A cable runs along the wall from C to P at a cost of $6 per meter, and straight from P to M at a cost of $10 per meter. Let x be the distance from C to P. If M is 8 meters from the nearest point A on the wall where P lies, and A is 18 meters from point C,
asked by Francois 
physics
If a man weighs 820N on d earth what would be on Jupiter, where the acceleration due to gravity is 25.9m/s
asked by ikeokwu stephen chidebere 
islamic studies
In matters of fiqh, if one is faced between 2 choices: a. a stronger opinion based on Quran & Sunnah but if it turns out in reality to be wrong, one might commit a sin or make certain ibadah invalid,etc b. a weaker opinion but a safer option Which option
asked by alif 
Statistics
so we will be having a quiz about hypotheses testing and i cant still figure out the difference between the null hypothesis with alternative hypothesis. PLEASE HELP ME DIFFERENTIATE THE TWO. And i still get confused between one tailed test and two tailed
asked by Ngiti 
math
James has a board that is 3/4 foot long. He wants to cut the board into pieces that's each 1/8 foot long. How many pieces can James cut from the board? My work; 👈0:1/4:1/2:3/4 _______________________________
asked by candyce 
Math
Hi! I need help with this. Thank you! Directions: Solve this equation by doing it twice; one time using the substitution method and one time using the graphing method. 2/3 x + y = 2 2x – 3y = 6
asked by Steffi 
physics
The weight of an object is 480N on the earth and 120N on the moon,calculate the mass of the object on the moon
asked by rebone 
lo assignment
write down five physical changes experienced by boys only and five experienced by girls only during puberty?
asked by VRGINIA 
using skills
Which of the following statements is correct regarding the use of the web in the classroom? A. It provides learning opportunities for both teachers and children. B. It should be used as a teacher resource. C. It's too advanced for young children to use. D.
asked by lauren 
Physics
a billiard ball moving at 4.0 m/s strikes another billiard ball at rest and moves off at 3.46 m/s in a direction of 30 degrees from the original of the motion. What is the velocity of the target ball?
asked by Reynaldo 
Physics
A 100 kg crate rest at the back of the bed of a pick up truck. The length of the crate is 1 m in the length of the bed is 4 m. There is no friction between the bed of the truck in the crate. If the truck is traveling at 25 m/s just before it hits the wall,
asked by David 
Math
Prove that if the sides of one angle are parallel to the sides of another angle, the angles are congruent. Given: BAED, BCEF, AND BEG Prove:angle ABC is congruent to angle DEF
asked by Serenity 
Chemistry
calculate the density of 50.0 g of gold that occupies a volume of 2.59 mL.
asked by Lee 
businessmath
Statistics show that the sales force of a certain company successfully closed 986 sales out of 1,700 sales calls. What was their percent success rate? If needed, enter decimals rather than fractions. Do not enter the percent symbol in your answer.i need
asked by babysunshine 
CHEMISTRY
Using a 0.20 M phosphate buffer with a pH of 6.5, you add 0.72 mL of 0.46 M NaOH to 58 mL of the buffer. What is the new pH of the solution? (Enter your answer to three significant figures.) I don't even know where to begin!! I just need a set up of the
asked by Mack 
Physics
A 1500kg blue car is travelling south, and a 2000kg red sports car is travelling west. If the momentum of the system consisting of the two cars is 8000kg.m/s directed at 60 degrees west of south, what is the speed of each car?
asked by Reynaldo 
physical science
A stone of 8 kg mass falls from the top of an 80 mhigh building. Find the velocity of the stone when it reaches the ground
asked by tye 
using skills
All of the following are math materials except A. twodimensional cutouts. B. wipeoff folders. C. paper and pencil. D. sand and clay. b. is my answer
asked by lauren 
math
16. A picture of a star has 6 identically matched points. What is the least number of degrees that you can rotate the star onto itself? (1 point) 60° 120° 180° 240 How do i figure this out?
asked by Louis 
Chemistry
an ideal system absorbed some amount of heat and gas expand and the piston move to 0.4 meter against than the atmospheric pressure. If the cross sectional area of the container is 0.6 meter2. What is the amount of heat absorbed?
asked by Muhammad 
Statistics
find the probability that you will get a "sum" of 5 or greater in rolling two dice experiment. How do you do this?
asked by Tamera 
6TH GRADE MATH
The value of the dependent variable in a function is always __________ the value of the independent variable. 1.GREATER THAN 2.DEPENDENT ON 3.LESS THAN 4.EQUAL TO
asked by ASSAAPPP 
Chemistry Basics Please Help!
Choose either homogeneous or heterogeneous. Tea: homogenous Concrete: heterogeneous Soda: homogeneous Soapy Water: homogeneous Salt Water: homogeneous Granite: heterogeneous Please help, and thanks lots :D
asked by Anonymous 
Physics
Consider an airbubble level that is sitting on a horizontal surface. Initially, the air bubble is in the middle of the horizontal glass tube. (a) If the level is pushed and a force is applied to accelerate it, which way would the bubble move? Which way
asked by David 
life orientation
analyse the effectiveness of communication in relationship
asked by NIKY 
Social Studies
1. What dynasty ruled the Korean peninsula from AD 668 to AD 935? Meiji Qin Silla*** Tokugawa 2. What type of government ruled North korea after World War II communist**** democratic dictatorship oligarchy 3.Both Japan and the Koreas been influenced by
asked by Madi 
math
3000 for 3 years at 1.8% compounded monthly
asked by kris 
social studies
which is the main climate in cyprus 1. tropical and dry 2. continental cool summer 3 mediterranean 4 humid subtropical
asked by ana 
Physic
A 60g bullet fired at two blocks resting on a surface with coefficient of kinetic friction =0.5. The bullet pass through a 8kg block and make this block slides 0.8 m. And then the bullet lodges in another block which is 6 kg. The bullet make it slides
asked by Takako 
maths
1.solve the set of linear equation by matrix method.a+3b+2c=3,2ab3c=8,5a+2b+c=9 solve for a,b,c 2.solve by Guassian elimination method, (a)a+2b+3c=5,3ab+2c=8,4a6b4c=2, (b)
asked by emmanuel konwei 
History
what did reconstruction fail to do in south carolina? A.readmit the state to the union B.establish the belief in white supremecy among some group C.return control of state politicsto local leaders D.free african americans from slavery? I Got C but im not
asked by Help me,plz 
History
What in his life made president Lincoln want to abolish slavery? I know that he created the Emancipation Proclamation to end slavery.
asked by Izzy 
Statistics
A random sample of state gasoline taxes is shown for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 0.21? assume normal distribution.
asked by Say 
maths
A number of circles touch each ather. The area of the smallest circle is 4n cm^2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
asked by jay 
Math
line segment AB is parallel to line segment CD and AB is not equal to CD. Prove that A, B, C, and D must lie in a plane and form a trapezoid. I really don't understand and i need help, thanks.
asked by Serenity 
american Literature check answers
How were the Dark Romantics different from the Transcendentalists? They explored the darker sides of the human soul. They revered reason over intuition or imagination. They believed in the innocence of all people. They disregarded any spiritual side of
asked by jimm 
MATHS
in a GP,the product of the 2nd and 4th terms doubled the 5th term and sum of the first four term is 80.Find the GP.
asked by SALAUDEEN 
algebra word problems
The length of a rectangle is 6 inches longer than its width. The perimeter of the rectangle is 28 inches. If x represents the width of the rectangle, which equation can be used to find its value?
asked by none 
american Literature check answers part 2
What thought torments the speaker in "The Raven"? The raven has been sent by his greatest enemy. The speaker has wasted his life studying old books. The speaker will never see his beloved Lenore again. The speaker will never understand the books he reads.
asked by jimm 
Chemistry
How many grams (of mass m) of glucose are in 355mL of a 5.50% (m/v) glucose solution? You have a solution that is 18.5% (v/v) methyl alcohol. If the bottle contains 2.49L of solution, what is the volume (V) in milliliters of methyl alcohol? A 6.00 % (m/v)
asked by Jennie 
word problem
Ieda bakes 73 cupcakes and accidentally drops 5 of them. She divides them equally into 13 containers for a bake sale for the school band. How many cupcakes does Ieda have left?
asked by none 
6th Grade Math
A deepsea diver must descend and ascend in short steps to equalize pressure on his body. If the diver rises toward the surface too fast, he may suffer from a physical condition called "the bends". Suppose the diver started at 82 feet below the surface and
asked by MusicLover14 
Probability
Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p, where 0
asked by Jonathan 
Chemistry
Calculate the mass/volume percent of a NaCl solution in which 182g of NaCl is dissolved in enough water to give a total volume of 4.78L . Would I do 182/4780ml *100?
asked by Jennie 
math
anne spent half of her money on CDs. After se spen half of what was left on stickers
asked by k 
math
Points $D$, $E$, and $F$ are the midpoints of sides $\overline{BC}$, $\overline{CA}$, and $\overline{AB}$, respectively, of $\triangle ABC$. Points $X$, $Y$, and $Z$ are the midpoints of $\overline{EF}$, $\overline{FD}$, and $\overline{DE}$, respectively.
asked by John 
Math  Geometry  Triangle Medians and Altitudes
Points D, E, and F are the midpoints of sides BC, CA, and AB, respectively, of triangle ABC. Points X, Y, and Z are the midpoints of EF, FD, and DE, respectively. If the area of triangle XYZ is 21, then what is the area of triangle CXY?
asked by John 
algebra
The drama club has 41 members. There are nine more girls than boys. How many boys are in the club
asked by kay 
solid mechanics
A Piece of material 15 cm long by 2.5 cm square is in compression under a load 100 KN. If the modulus of elasticity of the material s 105 GPa and Poisson¡¯s ratio is 0.25, find the alteration in length if all lateral strain is prevented by the
asked by navneet 
solid mechanics
A steel plate is subjected to tensile stresses of 200MPa and 150 MPa at right angles to each other. Determine the normal and tangential stresses on a plane inclined at 60 to the 200 MPa stress. Also find the plane on which the resultant stress has maximum
asked by navneet kumar 
physics
a stone is thrown upward with a speed of 24.0m/s how fast is it moving when it reaches a height of 13.0m?
asked by oratile 
physic
Question Part Points Submissions Used A hypodermic syringe contains a medicine with the density of water (figure below). The barrel of the syringe has a crosssectional area of 2.88 105 m2. In the absence of a force on the plunger, the pressure everywhere
asked by sam 
Chemistry help!! Fast
true or false??? The larger molecules dissolve best in a solvent with a low molecular weight.
asked by Jennie 
math
sasha has a bag of l red sock, 1 blue sock, 1 white sock, and 1 green sock. she pulls a sock out of the bag without looking, puts it back, and pulls out another sock out of the bag without looking. What is the probability that she will pull out a white
asked by Little_rebel 
life oriatation
to what extent can intrapersonal conflict affect:choice of career
asked by maphoko 
Math, Analytic Geometry
Derek wants to determine the height of the top of the backboard on the basketball goal at the playground. He places a standard 12inch ruler next to the goal post and measures the shadow of the ruler and the backboard. If the ruler has a shadow of 10
asked by Kniasia 
Chemistry Help
WHAT???? which of these are electrolytes?? CH3CH2OCH2OH PCl3 Na2CO3 O2
asked by Jennie 
algebra II
The following rational function describes concentration in blood of a certain medicine taken once depending on time, find a. the horizontal or oblique asymptote(s), if any, b. the vertical asymptote(s), if any, c. describe their possible meanings.
asked by Kristen 
math
A trainer for a professional football team keeps track of the amount of water players consume throughout practice. The trainer observes that the amount of water consumed is a linear function of the temperature on a given day. The trainer finds that when it
asked by Kathryn 
Criminal Justice
I need 8 reason why innocent individuals are wrongfully convicted, and i need an example for each. Is there a website or article that can help me answer this?
asked by breeamberr 
Earth Science
Which of the following is NOT generally associated with a thunderstorm? A. tornado B. lightning C. dry air
asked by Emi 
physics
Object 1 has a velocity of 3m/s and a mass of 5kg. Object 2 also has a mass of 5kg but isn't moving. Object 1 collides with Object 2 and they move off together. Work out their speed using the principle of conservation of momentum.
asked by help me 
Chemistry Help
I have no idea where to begin with this?? This class is moving so fast! Dr. Bob222 I made a 100 on my prelab!! and the online test was so fast I was going through my notes and I was scrambling to figure it out and look up stuff on the periodic table and
asked by Jennie 
Biology
When talking about Mendel's experiments, can the Parent (P) generation also be called P1?
asked by Anonymous 
math
Christopher made three and one fourth dozen cupcakes . He added vanilla icing to one third and chocolate to the rest . How many cupcakes in dozen have chocalote icing ? I need answer and show work pls
asked by Hannah 
Child education
As Ms. Ramirez planned for her group time, she considered the best way to begin. Which one of the following would NOT be an effective way for her to begin group time? A. Asking individual children if they brought something to share B. Leading children in
asked by Danielle 
stats
a captain claims that at least 85% of the residents in his barangay have household pets. to test this claim a researcher randomly selected a sample of 550 residents and find that 495 of them do have household pets. at 0.05 level of significance. formula
asked by Anonymous 
math
If you buy two DVDs for $8 each and one poster for for $6 and there was a 40% store discount what was the sales price of the purchase How do I get started I am confused???
asked by Tony 
Algebra 2
Simplify each sum or difference. State any restrictions on the variable. 3x/x^29+4/2x6
asked by Sam 
calculus
If u=(0,2,3) and v=(1,3,1) find the projection of u onto v a) 1/3 u b) 3/11 v> > c) (1,1,1) d) (1/3, 1, 1/3)
asked by muntrey 
chemistry help
When carbon dioxide and carbon react the balanced equation is Co2+C2Cq Calculate the mass of carbon monoxide formed from 4.4g of carbon dioxide
asked by Victoria 
calculus
Find Indefinite Integral of dx/(x(x^4+1)). I think that Im complicating it too much. I moved the dx out making it 1/(x(x^4+1))dx than 1/(x^5+x)dx. I think i have to use formula indef integral of dx/(x^2+a^2) = 1/a(tan^1(x/a)) but im stuck i don't know
asked by anna 
math
explain how you can use a number line to show that 3/6 and 1/2 are equivalent fractions?
asked by anita 
Math
Warren poured some chips of the Pringles can, 6 chips were broken which represents 8% of the can. In all, how many chips were in the Pringles can?
asked by Amy 
Chemistry
What volume (mL) of 0.20 M HCl needs to be added to 1.23 L of 0.10 M acetic acid to reduce the percent ionization to 1.00%? Assume the volume of HCl added is negligible compared to the volume of the whole solution, and that the small x approximation is
asked by Molly 
7th Grade Math.
I have been trying to work this out but just cant. Find the function rule. X 2 1 0 1 2 Y 9 4 1 6 11 Thanks, ~JH
asked by Jarrod 
Social Studies
Name two advances made by Indian mathematicians without which computers would be impossible today.
asked by Gummybear a.k.a Nicole 
Criminal Justice
what is the definition of government miscounduct
asked by breeamberr 
Science
Name and explain in detail four organizations or agencies that work to address human violations
asked by Petunia 
Math
Several friends each have 2/5 of a bag of peanut left over they should bought 2 fewer bags
asked by Anonymous 
chemistry help fast
The following reaction occurs in a blast furnace Fe2O3 +3Co2Fe+3Co2 Calculate the mass of carbon monoxide needed to reduce 16 tones of iron (111) oxide
asked by Victoria 
chemistry
Can someone show me the answer to this as I am well confused. What mass of lead oxide reacts with 2400dm3 of carbon monoxide?
asked by alastair 
Mathematical literacy
Assume there are 4 people living in the house nd their daily average consumption is 25litres per person per day nd there are 30days in a month . Calculate the average monthly water consumption for the household.
asked by Lizzy 
what to say?
my assignment was to create a product so i chose an energy drink called electrify however i don't know what to say when presenting what can i say so ppl can buy my product or simply anything to say during mt presentation
asked by anonymous 
geometry
Rita bikes 4 miles in 21 minutes . At this rate, how many miles does he bike in a hour ?
asked by bridgette 
math
Here are linear equations Find the value of x and y 1/2x + 1/3y = 8 3/2x  4/3y = 4 I got y= 72/7 and x= 160/7
asked by OpTicScumpii 
Physics
A cannon shoots a cannonball with a mass of 20 kg and a net force of 2000 N a) label the three force pairs(HORIZONTAL ONLY) b) What is the acceleration of the cannonball? c) Does the cannon continue to move/ Explain why or why not. Specify which force will
asked by Nam Nguyen 
math
if u buy 15 bags of chips and it only costs $20 and u have $62 how much change are going to get back
asked by iffy 
civics
hi i need help on the cold war? and world war 2? what happen in the cold war and world war 2
asked by nick 
Science
Human Body & Disease Practice 1) Which of the following effects would you expect if red blood cells were shaped like neurons? :They would not be able to move as easily through capillaries.*** :They would more easily carry out gas exchange in the alveoli.
asked by TheLOUDEST_0430 
Math
Ms. Henderson’s 5 art classes are turning in their final projects for the year. The table shows the numbers and type of project turned in during her first 4 classes. Part A Write the ratio of paintings to sculptures for each class in simplest terms.
asked by Anonymous 
Chemistry (organic)
You have a solution that contains 5.0 g of oxalic acid dissolved in 150 mL of water. This solution is placed in a separatory funnel, and then 100 mL of diethyl either is added to the separatory funnel and an extraction is performed (diethyl ether and water
asked by Brendon 
pharmacy tech
2. How do you determine the number of grams of an active ingredient in a solution based on the percent strength?
asked by Lalo 
Earth Science
What color will a star be with a surface temperature of 5000–6000 K? A. blue B. yellow C. white my choice is B yellow
asked by Emi 
physics
A constant torque of 200Nm turns a wheel about its centre. The moment of inertia about this axis is 100kgm^2
asked by ben 
Chemistry
What is the percentage of nitrogen in N2O?
asked by Ciaria 
economics
The production function for our Production is Q = 25L  0.05L^2; where Q is output and L is manhours. What level of manhours will maximize total output?
asked by Anonymous 
Science 8th Grade
1. How Will resistance change when the voltage increases in an electrical circuit if the current remains constant A. It will decrease **** B. It will stay the same C. It will increase D. It will decrease, then increase
asked by * 
Chemistry
How many nonbonding electrons does phosphorus have? is it 5 valence electrons
asked by Ciaria 
math
A number of circles touch each ather. The area of the smallest circle is 4picm2 and each consecutive circle has area 9/4 times that of the previous one. If the distance AB=665/8. Line AB passes at the centre of the circles. How many circles are there?
asked by jay 
Algebra 2
From 19901994 the mail order sales of health products can be modeled by S= 10t^3+115t^2+25t+2505 where S is the sales (in millions) and t the number of years since 1990. In what year were about $3885 million health products sold.
asked by Help 
Algebra 2
For 19801996 the total exports (in billions of dollars) of the U.S. can be modeled by E=0.13t^3+5.033t^223.2t+233 where t I'd the number of years since 1980. In what year were the total exports about $312.76 (use finding zeros to solve)
asked by Anonymous 
Physics
Can someone walk me through how to work this? A block is being pushed up a frictionless incline by an applied horizontal force, F=12.7N. (The angle is θ = 23.80° and the mass is 1.70kg. a) How many forces are acting on the block? b) How many of those
asked by James 
Physics
Can someone walk me through how to work this? It's worded weirdly and I'm not sure how to solve it. Mass M1= 2.2 kg lies on a frictionless table, pulled by another mass M2= 4.1 kg under the in of Earth's gravity. a) What is in N the net force acting on the
asked by James 
Physics
Can someone help me solve this one? I've tried it a few times, but I don't think I'm getting it right. A block of mass M = 2.2 kg starts from rest at a height of 3.6 m on a fixed inclined plane. The coefficient of kinetic friction between the block and the
asked by James 
Math
The area of a rectangular field is given by the trinominal t^24t45. The length of the rectangle is t+5. What is the expression for the width of the field? A) t9 B) t5 C) t11 D) t7 Can someone please help? Thank you!
asked by Tia 
History
Compare and contrast the ideas and policies, domestic and foreign, of Roosevelt, Taft and Wilson. Where can I find information that compares their domestic policies? My Answer so far: Roosevelt, Taft, and Wilson were all progressive reformers, but their
asked by TayB 
History
How and why did the Conservation Movement begin? (What makes the Progressive Era Conservation Movement different from environmentalism today?
asked by TayB 
History
In what ways did the Progressive Era set the stage for U.S. involvement in the world today? In what ways are things different now?
asked by TayB 
Chemistry
What is the volume of 20.55 grams of hydrogen gas at a pressure of 1.215 atmospheres at 29.3 degrees Celcius? how do you solve this
asked by Johnny 
Chemistry
What is the magnetism of F2+, and how many unpaired electrons does it possess? Would F2+ act the same way as F+? In that case it would be paramagnetic and have 2 electrons.
asked by Anonymous 
Math
Bill can ride his bike 7 1/2 miles in a hour. a. How far will he ride in 3 hours? b. How far will he ride in 1/3 of an hour? I think for a. the answer is multiply so it would be 22 1/2 miles and for b. it would be 2 1/2 miles. Is this correct?
asked by Alice 
Math
Find the area of the basketball court. The length of the rectangle is 100m and the radius of the senicircle is 25m.
asked by Ant 
math
At a school camp, 30% of the students were boys. When 87 students left the camp after the second day, half the original number of boys were left behind, and the number of girls decreased by 20%. How many girls were at the camp in the beginning?
asked by jessi 
Math
Sue's kitten eats 1/12 pound of food everyday. If Sue buys food in 5 pound bags, how many days does one bag of food last? I think I would divide and the answer would be 60 days is this correct?
asked by Alice 
MATH
In Mrs.Marshall'd classroom, 6/7 of the students play sports. Of the students who play sports, 4/5 also play as instrument. If there are 35 students in her class, how many play sports and an instrument?
asked by Joanna 
Math
Amy uses 8 cups of flour to make 3 identical loaves of bread.How much flour is in each loaf? I think it is division and I got 2 2/3 cups of flour. Is this correct?
asked by Alice 
Math
I can throw a ball 10 1/3 yards. My cousin can throw a ball 13 1/12 yards. How much farther can my cousin throw the ball? I think I have to subtract and my answer is 2 3/4 yards farther. Is this correct?
asked by Alice 
Math
Hank's fish bowl holds 9/10 gallon of water. It is now 2/3 full. How much water is in the bowl? I subtracted and my answer is 7/30. Is this correct?
asked by Alice 
Chem Dr. Bob Plz
Dr. Bob, I just did a home lab with citric acid and sodium bicarbonate and had to put them in cups and measure before and after.. I put 1.02g of sodium bicarbonate in a cup with water and stirrer (54.66g) then added .77g of citric acid and supposed to add
asked by Jennie 
math
8sin^4(x)
asked by Anonymous 
Chemistry
Identify the precipitate in this reaction: calcium nitrate reacts with sodium phosphate. 2Na3PO4 + 3Ca(NO3)2>6NaNO3 + Ca3(PO4)2 is that right ?
asked by Ciaria 
Chemistry
Hello, I'm having some trouble getting started on this question: "Calculate the volume and mass required to make 0.1 M solutions of Propionic Acid (1.0 M) and Sodium Propanoate (96.06 g/mol)" I would normally not have trouble answering this question when
asked by Leo 
Math
Bill plays ball for 9 hours each week. His friend Mark spends as much time playing ball. Who plays more ball? I think I have to divide. So I think Mark plays more ball by 10 4/5 hours. Is this correct? Thank you so very much for your help Ms. Sue.
asked by Alice 
English
Is 'purse' and 'handbbag' the same? Are they used by women?
asked by rfvv 
Chemistry
The following is a Limiting Reactant problem: Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg(s) + N2(g) Mg3N2(s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)?
asked by Ciaria 
calculus
Find the arc length of the given function/curve on the given interval. y=ln(xsqrt(x^(2)1)); x ϵ [1, sqrt(2)]
asked by kales 
math
I am less than 20 I am an odd number I am the square root of 225 I am
asked by princess 
math
emily pays $93 each year to belong to a photography club. next year, the membership fee will increase by 12.5%. emily estimates that the membership will just be under $100 each year after the increase. what is a true statement about emily's estimate? a.
asked by Angelina 
Math
Sara long jump was 10 feet. That is 5/6 foot longer than Tom's long jump. Did Tom jump more or less than 10 feet? I think I have to multiply and so Tom's jump was less by . I think his jump was 8 1/2 feet. Is tis correct?
asked by Alice 
Math
Which relation is a function? (Points : 1) A.(1, 2), (1, 5), (1, 1), (1, 4)} B. {(8, 1), (2, 1), (3, 8), (2, 5} C. {(3, 4), (2, 5), (0, 9), (0, 12)} D. {(7, 12), (1, 5), (3, 10), (2, 5)} Is its C :P?
asked by Gia 
Chemistry Dr. Bob
Now, I'm going to post how to figure out the theoretical yield of carbon dioxide from 1.00g sodium bicarbonate... The reaction of citric acid and sodium bicarbonate is written as H3C6H5O7(aq) + 3 NaHCO3(aq) → Na3C6H5O7(aq) + 3 H2O(l) + 3 CO2(g) Um.. I
asked by Jennie 
Chemistry
Would you expect H2O or H2S to be more volatile at the same temperature and pressure? Why?
asked by Derek S. 
Math
What is 8 3/4  5 5/6 =? Shouldn't the denominator be 24 ? What is this answer please show the work.
asked by Kalelha 
Math
What is 13 3/5  6 1/4 =? Show me the work please.
asked by Kalelha 
chemistry
What does ammonium Iodide equation look like dissolved in water?
asked by tia 
chemistry
Why do compounds with strong intermolecular attractive forces have higher boiling points than compounds with weak intermolecular attractive forces?
asked by Ciaria 
Algebra
A person's trip from the city to his cabin in the mountains was 229.6 miles. If his car used 4.5 gallons of gas for the trip, estimate the number of miles his car gets to the gallon
asked by Anonymous 
Chemistry
Why is the first ionization energy of a nonmetal much higher than that of an alkali metal in its same period?
asked by Ciaria 
English
To Mr. Reed who had previously answered my question on realism in A Raisin In the Sun and told me to to write about Travis sleeping on the couch , thank you but I need to write realism in Acts 1, 2, 3 and since you thought that only the second one was
asked by Notafanofschool 
Chemistry AP
At 20◦C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 35.5 torr at 20◦C. Calculate the mole fraction of methanol in this solution. Assume
asked by Ethan 
Art Help!!! Thank you
1.The Greek temple has often inspired the design of what type of American structure? A. amphitheater B. Colosseum C. courthouse D. Bridge Is the answer A?? Thanks in advance 2. Why might a college choose to use Greek architectural elements such as columns
asked by anonymous 
math derivatives
derivative of ln[(1+v)^(1+v)(1v)^(1v)] I know my log rules allow me to rewrite this as ln[(1+v)(1+v)+(1v)(1v)] but what I do from there i don't know.... Wolfram says it is ln(v+1)ln(v1)but i don't know how to get that...
asked by pat 
math
bobs monthly phone bill is made up of a 10.00 fee plus $0.05 per min.bobs phone bill for july was 22.00 write an equation to model the situation using m to represent the number of min. solve the bequation to determine the number of phone mins.bob used in
asked by cynthia 
Math
Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x5y=2 2x+5y=13 2.) 3x+11y=4 2x5y=9
asked by Yola 
Algebra
5/2 divided by 5/9 =
asked by Anonymous 
Math Check
Can someone check my answers? Thanks! Tell whether the system is inconsistent OR dependent. 1.) 7x+6y=4 14x12y=8 2.) 3xy=7 6x+2y=8 My answers: 1.) inconsistent 2.) Dependent
asked by Fee 
computer
how to use a google fusion table
asked by bhakti N 
chemistry
How many dots should be indicated in the electron dot structure of arsenic? How many electrons are in the highest energy orbital of the element copper?
asked by Ciaria 
Science
What is another example of a gas in your classroom? I know air would be one but I can't think of what would be another one present in a classroom. Thanks...
asked by Brandi 
calculus
If a snowball melts so that its surface area decreases at a rate of 3 cm2/min, find the rate at which the diameter decreases when the diameter is 11 cm.
asked by Danijela 
Algebra
13 1/3 divided by 22 1/2
asked by Lisa 
L.A
Which of the following is the best definition of stage directions? A. Notes on how to write the story B. Notes on how the work is to be staged and prformed C. Notes on how to place props and lightning. D. Notes on how to build the set to match the
asked by Anonymous 
Physics
A 39turn circular coil of radius 3.20 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 0t + 0.040 0t2, where B
asked by Chris 
Chemistry Dr. Bob
This is in response to the fact that my experiment had me come up with my own.. I was supposed to measure out as close to 1g as possible of sodium bicarbonate as possible.. This is my lab procedures: Plastic Cup A 1. Measure out 50 mL of distilled water
asked by Jennie 
Emerson
I'm helping my son he is in 4th grade . His hw it's hard and this is the problem : find two mixed numbers. So that the sum is 7 2/8 and the difference 2 4/8.
asked by Claudia 
Precalcuse
A plane is headed N40E at 400 mph.there is a wind speed of 50mph from the south.if no correction is made for the wind,what are the final direction and ground speed of the plane?
asked by Damanta 
L.A
Read the opening line of dialogue from Anne Frank and Me: "Right now we are in Westerbork, in Holland. Earlier today they opened the door and shoved more people into our car... I think it is the 3rd of September, 1944..." How does this line contribute to
asked by Anonymous 
math
You need at least 5 pounds of potatoes and onions. Potatoes cost $4 per pound and onions cost $2 per pound. You can spend at most $18. a) define the variables b) a system of linear inequalities that represents this situation.
asked by Inequalities 
math
what percent of student perform at the national average. there are 32 kid
asked by Anonymous 
english 201
An essay on the yellow wall paper by charlotte Gilman. how do I start.
asked by slymeena 
physics
A 4 cm candle sits 15 cm in front of a converging lens with a focal length of 6.0 cm. Draw a ray diagram showing the image used and determine the image distance and magnification. Please help me answer!
asked by sarah 
Chemistry
Why are the atomic masses of elements usually decimal numbers?
asked by Ciaria 
AP CHEM LAB
How much .25 molar NAOH would you need to add to 50 mL of 2.85 molar HCl to reach the equivalence point?
asked by Lola 
L.A
Read the following stage directions and dialouge from billy Elliot: [Billy suddenly sees DAD and freezes. His reaction puzzles Mrs. Wilkinson for a second. The music comes to a standstill. Mrs. Wilkinson turns to see Dad.] DAD: You.Out.Now What do these
asked by Anonymous 
Chemistry
If an element has 12 protons and 17 neutrons, how many electrons must it have?
asked by Ciaria 
L.A
Read the following stage directions and dialouge from billy Elliot: [Billy suddenly sees DAD and freezes. His reaction puzzles Mrs. Wilkinson for a second. The music comes to a standstill. Mrs. Wilkinson turns to see Dad.] DAD: You.Out.Now What most likely
asked by Anonymous 
social studies
The North liked high tariffs on foreign goods because?
asked by Rian 
chemistry
Complete and balance this reaction: sulfuric acid reacts with barium chloride
asked by Ciaria 
Math
What is 8 3/4  5 5/6 = Is 24 the Denominator for this problem? Show all the work.
asked by Kalelha 
Math
Come pleat the table to represent each part of the formula. The data values have been put in ascending order.  X, (X,  x) 2 30 ? 32 ? 33 35 49 50 50 71 73 77
asked by Ashley salisbury 
Math
For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was 5 cents, and the number of reserved seats sold was 1/25 of the number of unreserved seats sold.If, at a second game, the price of the
asked by Brian 
Chemistry
Write the formula for iron (III) sulfate. My answer is Fe2(SO4)3
asked by Ciaria 
math
Emma's school plans to build a rectangular basketball court with an area of 150+175t square feet. The length of the basketball court is 25 feet as shown in the following diagram. Thank you!
asked by Kyle 
chemistry
Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm3. Show all calculations leading to an answer. Vcube=
asked by Ciaria 
math
Emma's school plans to build a rectangular basketball court with an area of 150+175t square feet. The length of the basketball court is 25 feet.What is the width of the basketball court? Thank you!
asked by Kyle 
Chemistry Ap
At 20◦C the vapor pressure of pure methanol (CH3OH) is 89.0 torr and of pure water (H2O) is 17.5 torr. A solution of methanol and water has a total vapor pressure of 35.5 torr at 20◦C. Calculate the mole fraction of methanol in this solution. Assume
asked by Ethan 
math
Janice plans to build a rectangular table top with an area of 60+20r square inches. The width of the table top is 10 inches. What is the length of the table top?. THANK YOU
asked by Sam 
Physics
Energy Budget for a Rocket in Free Space: Recall the analysis of the rocket engine in Project I, Flight of the Rocket. Although the momentum of the rocket and its exhaust is conserved (constant), their energy is not; energy must be supplied by the
asked by Steve 
math
Tony plans to install a window pane that has a length of 8 inches and a width of 6 inches. He decides that the length has to be reduced by z inches. He says that the new area of the window pane will be 48−z. Is Tony correct? Why or why not? THANK
asked by Sam 
chemistry
when the nuclear charge increases, does the electron;s attraction to the nucleus get stronger or weaker ?
asked by lan 
Physics
A square coil with 30 turns has sides that are 18 cm long. When it is placed in a 0.31T magnetic field, a maximum torque of 0.60 N⋅m is exerted on the coil. What is the current in the coil?
asked by Keith 
calculus
Find the arc length of the given function/curve on the given interval. y=ln(xsqrt(x^(2)1)); x ϵ [1, sqrt(2)]
asked by kales 
7th grade science
how much work is done on an object with 25 kg on earth if it moves 13m? i really need help
asked by KVNG J 
Precalculus (trigonmetry)
The Bermuda Triangle is an unmarked area in the Atlantic Ocean where there have been reports of unexplained disappearances of boats and planes and problems with radio communications. The triangle is an isosceles triangle with vertices at Miami, Florida,
asked by Lucina 
math
five friends went to a baseball game. three of the friends each bought a ticket for x dollars and a soda for six dollars the other two friends each bough only tickets. write and simplify and expression that represent the amount of money spent
asked by she 
Chemistry Dr. Bob
Plastic Cup B Mass of cup, water and stirrer: 53.75g mass of sodium bicarbonate: 2.02g mass of citric acid: 1.52g total mass of all: 57.29g mass of cup, solution, stirrer after reaction: 56.59g difference (CO2): 0.70 g Now, Here's the problems it's
asked by Jennie 
Chemistry Dr. Bob222
Ok, UMMMM I thought I was good.. Till now.. Ok, For Cup C Mass of cup,water,stirrer: 55.15 Mass of sodium bicarbonate: 2.02g mass of citric acid: 0.77g total mass: 57.94g mass of cup,solution, stirrer after reaction: 57.64 difference (CO2): 0.30g Part B:
asked by Jennie 
chemistry
The heat of solution of potassium acetate (KC2H3O2) in water is 15.3 kJ/mol. If 18.8 g of KC2H3O2(s) is dissolved in 655 mL of water that is initially at 25.8 °C, what will be the final temperature (in degrees Celcius) of the resulting aqueous solution?
asked by Fiona 
chemistry
Given the following data: 4PCl5(s) ¨ P4(s) + 10Cl2(g) ƒ¢H = +1774 kJ P4(s) + 6Cl2(g) ¨ 4PCl3(l) ƒ¢H = 1278.8 kJ Find the ƒ¢H of the following reaction: PCl5(s) ¨ PCl3(l) + Cl2(g)
asked by Hi 
chemistry
Given the following thermochemical data: H2O(l)+2AgNO3(aq) ¡æ 2HNO3(aq)+Ag2O(s) ¥ÄH = 44.8 kJ 2Ag(s)+¨öO2(g) ¡æ Ag2O(s) ¥ÄH = 31.0 kJ ¨öO2(g)+H2(g) ¡æ H2O(l) ¥ÄH = 285.8 kJ Use Hess¡¯s Law to determine ¥ÄH for the reaction:
asked by Help? 
math
Susie uses 1/2 to help compare 1/3 to 3/5 and to help in comparing 3/7 with 2/3. Explain how 1/2 help determine which fraction is greater in each combination.
asked by tammy 
math
How do I round this to the nearest ten thousand 1,112,433
asked by Ceylonia