Questions Asked on
June 17, 2011

chemistry
what is the activity of water at 11bar and 298k
asked by Anonymous 
Chemistry
Please help me with the following question: Consider the following ion; XF22 What is the oxidation number assigned to element “X”? Show your work I'm having trouble writing the steps.
asked by Amanda 
chemistry
How many grams of propane (C3H8) must be burned to release 3600kJ of energy? Standard Heat of combustion for Propane= 2220 kJ/Mole
asked by Max 
English
Maya Angelou  I Know Why the Caged Bird Sings What Maya Angelou means by the title of her autobiography.? Please Help if you can
asked by Erik 
Chemistry
Little confusing!! I need help PLZ!!! Two half cells in a galvanic cell consist of one iron (Fe(s)) electrode in a solution of iron (II) sulphate (FeSO4(aq)) and a silver (Ag(s)) electrode in a silver nitrate solution. a. Assume the cell is operating as a
asked by Andrew 
physics
A horizontal pipe of diameter 0.845 m has a smooth constriction to a section of diameter 0.507 m. The density of oil flowing in the pipe is 821 kg/m3 . If the pressure in the pipe is 8350 N/m2 and in the constricted section is 6262.5 N/m2 , what is the
asked by ryan 
math
What is 304 in expanded form
asked by Anonymous 
Chemistry
For each of the following pairs of elements, state whether the binary compound formed is likely to be ionic or covalent. Give the formula and name of the compound. (a) C, Cl Its covalent, but I get the formula wrong and name wrong,CCl Carbon Chloride.
asked by Lance 
chemistry
Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy change of the decomposition of propane? 3 C + 3 O2 3 CO2 H =1182 kJ 4 H2 + 2 O2 4 H2O H = 1144 kJ C3H8 + 5 O2 3 CO2 + 4 H2O H =
asked by bryan 
Chemistry
Calculate the heat released when 64.5g of steam at 119 C is converted to water at 36 C. Assume the specific heat is 4.184 J/g*C for water, the specific heat of steam is 1.99J/g*C, and the heat of vaporization is 40.79 kJ/mol for water.
asked by Sydney 
Chemistry
A neutral molecule is identified as a tetrafluoride, XF4, where X is an unknown atom. If the molecule has a dipole moment of 0.63 D, can you give some possibilities for the identity of X? (Select all that apply.) sulfur nitrogen oxygen polonium phosphorus
asked by Lance 
Chemistry
Calculate the amount of energy required for the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 A, and the radius of the selenide ion is 1.98 A. Note that 1 A=10^10m.
asked by Ashley 
Chemistry
Calculate the amount of energy required for the formation of one mole of MgSe bonds (not lattice energy). The radius of the magnesium ion is 0.65 A, and the radius of the selenide ion is 1.98 A. Note that 1 A=10^10m.
asked by Ashley 
SPC
A consumer organization estimates that 34% of the households in a particular community have one television set, 39% have 2 sets and 18% have three or more sets. If two households are chosen at random, what is the probability that at least one has a
asked by Brandy 
Physics
A CAR HAS A MASS OF 1200KG TRAVELLING ON A LEVEL ROAD. THE CAR DECELERATED AT A RATE OF 10M/S^2 TILL THE CAR STOPPED. iT HAS TO OVERCOME A TOTAL RESISTANCE OF 400N WHILE BRAKING. (I) CALCULATE THE BRAKING FORCE OF THE CAR (II) WHAT WAS THE DRIVING OF CAR
asked by Janice 
chemistry
A bungee jumper is standing at the edge of a platform, just about to leap over the side. Midway through the jump, while the bungee jumper is halfway down to the ground, what is the relationship between potential and kinetic energy?
asked by mireli 
geometry
A tricycle tire has a diameter of 24in.How many feet does the tricycle travel when the wheel makes twelve revolutions? round to the nearest hundreth
asked by Jacobb 
Reading
Maya Angelou's  I Know Why the Caged Bird Sings is a poem I need help Please anyone 1. Why is Marguerite often embarrassed when Mrs. Flowers visits? 2. What is the relationship between Momma and Mrs. Flowers? 3. What does Mrs. Flowers teach Marguerite
asked by Billy 
american govt
what two events changed the relatively peaceful relationship between the American colonies and Great Britain
asked by Anonymous 
chemistry
Use the reaction below to determine the volume of 0.123 M AgNO3(aq)that is needed to form 0.657 g of Ag2SO4 (s). 2AgNO3(aq) + H2SO4(aq) ¨ Ag2SO4 (s) + 2HNO3(l) 2AgNO3 + H2SO4Ag2SO4 + 2HNO3
asked by katydid 
chemistry
When dissolved in 1000 g of water, which chemical compound will produce a solution with the greatest freezing point depression?
asked by mercedes 
Marks
What shall this 5/90 lotto produce from the last two result. Winning  Machine 21.20.73.78.1889.62.83.30.37 68.4. 22. 5 .5976.25.27.28.44
asked by Matte 
math
x+y+3z=600 x+y+z=400 1. In the system of equations above, what is the value of x+y? 2. There are 25 trays on a table in the cafeteria. Each tray contains a cup only, a plate only, or both a cup and a plate. If 15 of the trays contain cups and 21 of the
asked by Julia 
ashford unversity
1. Susan and Molly, employees in a busy call center, are chatting at lunch. Between bites of fried chicken, French fries, high calorie soda, and a tiny salad, Susan begins to complain to Molly that she can’t seem to lose weight and that she is tired all
asked by larry 
math
An iceberg breaks off from the Antarctic continent and floats due north at constant velocity/ It's latitude south decreases by 1 degree in 8 days. Taking the circumference of the earth to be 40 000km, calculate the speed of iceberg in ms^1.
asked by ivy 
physics
A small rectangular ferry boat is 3.33 m wide and 5.64 m long. When a loaded truck pulls onto it, the boat sinks an additional 3.25 cm into the river. What is the weight of the truck? The acceleration of gravity is 9.8 m/s2 . Answer in units of kN.
asked by ryan 
algebra
Find an equivalent expression with the given denominator 4/n=?/n 2power. The expression that is equivalent to 4/n is
asked by Maria 
Amelia Douglas
I was reading through some information about Amelia Douglas since I'm doing a biography on her, and I came to know that she had saved her husband Jame's life. I tried to make sense out of what I was reading, but I could only gather information that I
asked by Emma 
maths
two numbers are in the ratio of2:3.If the sum of their sqares is 468,find the numbers
asked by yatin 
Reading
I Know Why the Caged Bird Sings ok i got the first too who wants to help with this please i love yall forever 3. What does Mrs. Flowers teach Marguerite about uneducated people? 4. What does Marguerite learn when she listens to Mrs. Flowers read A Tale of
asked by billys back 
math
traffic signs are regulated by the manual on uniform control devices. the perimeter of some traffic sign must be 128 inches. Also its length is 6 inches longer than its width. Fin the width and the length of the sign.
asked by willa 
chemistry
How much energy must be put into a system to raise 100 g of solid water from 5.5 degrees Celsius to 75 Degrees Celsius? Heat Capacity of Ice: 2.09 J/g degrees C Heat Capacity of Water: 4.18 J/g degrees C Heat of Fusion: 6.01 kJ/mol
asked by Britney 
Operating research
Use simplex method to solve Maximize p = 30x + 20y+30z subject to x + y+z
asked by Terry 
operation research 1
Use simplex method to solve Maximize p = 30x + 20y+30z subject to x + y+z
asked by mashoo 
maths/Operating research
Solve the LP using graphical method Maximize p = 30x + 40y subject to x + y
asked by lilian 
exp in math
if a person earn 23,600 one year and get a 5% raise in salary what is the new salary?
asked by Nichole 
statistics
at the 0.05 level of significance, is there a difference in the variance of the study time for male students and female students?
asked by Anonymous 
maths
two numbers are in the ratio of2:3.If the sum of their sqares is 468,find the numbers please answered me imediately
asked by yatin 
Chemistry
Please help verify my answer. Not confident it is right: please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction halfcell reactions. Zn(s) + Pb+2(aq)
asked by Dexter 
Chemistry
Please help verify my answer. Not confident it is right: please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction halfcell reactions. Zn(s) + Pb+2(aq)
asked by Dexter 
college level math
on april 30,(day 0) there will ve 2500 lovebugs living in marion county. the number of lovebugs living in marion county will then increase at a rate of 9percent everyday since april 30. a)find the equation for the number of lovebugs living in marion county
asked by renee 
music
11. Explain how music and culture influence one another. Provide an example of a song or album that affected culture. Provide examples of songs with cultural references?
asked by Anonymous 
health
Why is it important to consider the components of the social ecology framework in community and public health?
asked by Anonymous 
biology
in a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the _, genes cause the _, traits to mask the _, traits
asked by nuffy 
chemistry(:
What are these elements listed from most reactive to least reactive? (: thanks bunches!! ((: Mg, Al, Ne, C, H, Cu, Fe, B
asked by Lisa 
Criminology
America is experiencing a major issue with immigration. What will future criminologists face in studies of crime control based on cultural diversity? How is cultural diversity affecting border patrol and local law enforcement?
asked by Stacy 
exp ofmath
13/14 + 2/9 reduce answer to lowest terms
asked by nikki 
calculus
The equation y = x(1/2) + 6 equals the equation y = x(1/3) + 12 at what value of x
asked by Anonymous 
college chemistry
so i've never used this litmus paper stuff & i totally missed the lab but i still have to answer this question. ** Describe the observation obtained when a piece of litmus paper is immersed in the mixture of two acids? ** These two acids it's talking about
asked by Kalli 
Business Comunication
A job application letter is different from a resume in that: a.it presents a job candidate's qualification. b.it uses short,parallel phrases and sentence fragments. c.it is adapted to a position rather than to the needs of a particular organization. d.it
asked by Bar 
math
22 percentage of what is 66
asked by Anonymous 
math
What is the Prime factorization of 198
asked by Anonymous 
math
Write 999 as a roman numeral
asked by Anonymous 
Trig
The graph of y = 7cosx + 24sinx would be a sinusoid if it were plotted. What would be the first positive value of x at which there is a high point?
asked by Randy 
German
I really need someone to check this short paragraph for me. I'm not a German native speaker and I need to prepare it for tomorrow's language exam. Thank you very much in advance. IT'S URGENT!! Wenn ich an meinen ersten Schultag denke, kann ich bestimmt
asked by Henry1 
math
does the function f(q)=(q(1q))^1/2 satisfy the hypothesis of the mean value theorem at the interval [1,5]
asked by juan 
earth science
discuss stellar evolution(briefly describe each stage). what forces are opposing one another throughout the life of a star and how do they influence the various stages in the life cycle of a star?
asked by Stacy 
Chemistry / Elements
if fluoride is considered toxic, then why do they put it in tooth paste and municipal drinking water supplies?
asked by Jake 
algebra
at 5 p.m., a person 5 feet tall casts a 10foot shadow. at the same time, a flagpole casts a 40foot shadow?
asked by dona 
Chemistry
Brass is an alloy that is approximately 67% Cu and 33% Zn, by mass. How many grams of Cu and Zn are in a brass doorknocker weighing 2.2 pounds?
asked by Ippy 
physics
when a body which is displaced has not covered any distance
asked by Anonymous 
physics
please shelp me with this problem what is the stopping potential (V) if the wavelength of the incident light is 400 nm??
asked by Liz frank 
Chemistry
How can i prepare a solution of 12 g 50% (w/v) NaOH?
asked by PAnos 
GENRAL MATHS
PROVE THAT (1+COT A+TAN A)(SIN ACOS A)=SEC A\COSEC ACOSEC A\SEC A
asked by SARADA 
LA Grade 9
"Something invisible, seeking shelter from the cruel and pitiless vacuum of space." Is an example of: a. metaphor b. personification c. symbolism d. hyperbole Your help is much appreciated !!
asked by Maddison 
math
What's the force on a mans knees weighing 235 lbs falling from 8' landing on his feet on hard dirt be?
asked by kevin 
physics
Does the following represent a sample or a population? calories created while burning all of the coal taken from a rail car
asked by Halima 
English
Can you hel me formulate the first sentence better? Thank you very much. 1) Define the interior monologue providing an example of its use from (is it wrong?) the readings done in class. Explain then in what way it differs from the stream of consciosness.
asked by Henry1 
math
Convert 367 to Egyptian form
asked by Anonymous 
NU
a ball is thrown straight upward with some unknow velocity. The ball reaches a maximum height above the launch point of 32m. how fast is the ball movin when it is 8 m above the launch point
asked by frank 
history
Two ways by which lok sabha can vote for council of ministers by prime minister out of power??
asked by gauri 
Math
A ball is thrown with an initial velocity of 10 m/s from a height of 2 meters. At what time does the ball hit the ground?
asked by Ashley 
business
I need assistance in xbis/219 week 8 &9. Is there anyone who can help me?
asked by Renee 
English
Can you please check these two sentences, again? I had misspelt a noun in my previous post. 1) Define the interior monologue providing an example of its use from the readings done in class. Explain then in what way it differs from the stream of
asked by Henry1 
Intermiediate Algebra
Factor completely. Remember to look first for a common factor. If a polynomial is prime, state this 4t^2 + 64
asked by Elisa 
Intermediate Algebra
Factor completely. If a polynomial is prime, state this 9 + 8t^2  18t
asked by Elisa 
English
Can you please check these statements? I'm not sure about the word choice. 1) Explore the theme of the double as it occurs in the works of the writers we studied in class. (I need to change "we studided in class") 2) Describe (I need a synonym) the kind of
asked by Henry1 
college chemistry
why do halogens tend to form diatomic molecules?
asked by Elizabeth 
Math
rationalize the denominator 12 over 5 pie 90
asked by Melissa 
persuasive essay
need help checking grammar errors please and how good is it? Credits cards have some positive value to them from being able to make big purchases, to making an everyday purchase. This reminds me of a quote said by John Mc Donald’s “Everything that has
asked by mike 
college algebra
A function is given. Determine the average rate of change of the function between the given values of the variable. f(t) = 6/t ; t = a, t = a + h
asked by Kelley 
Chemistry
(a) A sample of cesium metal reacted completely with water, evolving 48.7 mL of dry H2 at 24°C and 774 mmHg. What is the equation for the reaction? Include statesofmatter under SATP conditions in your answer. Use the lowest possible coefficients. (b)
asked by Lance 
college algebra
A function is given. Determine the average rate of change of the function between the given values of the variable. f(x) = 6 âˆ’ x2; x = 1, x = 1 + h
asked by Kelley 
Algebra
what Is the unpaid balance of this loan at the end of the 10th year if you are buying the home for $250,000 with a Interest rate of 6%?
asked by Anonymous 
hoke county
o A few minutes later, Susan tells Molly that she doesn’t like their coworker, Karishima, because she can’t understand half of what she says due to her accent. Molly agrees with Susan, and they both begin to laugh about Karishima’s clothing, and how
asked by larry 
physics
A faucet leaks at the rate of four drops each second.If air resistance is neglected, determine the vertical separation between two consecutive drops after the lower one has fallen 20m
asked by victor 
Negotiations
Based on the following information below: Listed price of the house$329,000 Square feet3600 Rooms 10 Bed rooms 4 finished basement No Baths 2.5 garages 2 car garage time on the market 6 months miscellaneouslarge wooded lot, pantry, all brick
asked by Lola 
English
I forgot to include the following questions. I really hope you can have a look at them. I need you to improve question 2. Thank you. 1) Define the interior monologue providing an example of its use in the readings done in class. Explain then in what way it
asked by Henry1 
math
Convert 10010000. To a numeral in base10 2
asked by Anonymous 
westernncilvilization II
What do these readings tell you about Napoleon’s opinion of the Republic and the Enlightenment ideals which originally informed the course of the Revolution?
asked by bob 
math
Multiply in indicated base 100 2 X 101 2 
asked by Anonymous 
math
13% of what number is 26
asked by Anonymous 
chemistry)):
OMG! I'M SO CONFUSED! Like okay, the question is to write the formulae for the two acids formed when Chlorine is dissolved in water and I like really can't find anything BUT hypochlorous acid but that's just ONE!)):
asked by tonya((: 
math
if your ranked 59 out of 255 what is the percentage
asked by taylor 
geometry
The midpoint of mc is G. If AT = 42 and AG = 2x – 5, what is x?
asked by dave 
Intermediate Algebra
Factor by grouping, if possible, and check 5x3 + 4x2 − 10x – 8
asked by Elisa 
earth science
how do we calculate or determine the distance to stars? what units do we use and what are the limitations (if any) of the method used for such calculations?
asked by Stacy 
PSYC
How can a leader balance a spiritual organizational culture without imposing spiritual values on employees?
asked by MeMe 
Definition of Phrase
Could I know what this phrase means please? ...preferred the privacy of domestic life to the public spotlight.
asked by Emma 
bio 1
What factors apart from acid rain could be killing trees?
asked by kozy 
software
what is software?types of software and examples
asked by Anonymous 
HCR/240
Doing the final putting it all together. Having trouble when I enter the charges and payment transactions it is not showing the insurance information that the patient has. Any suggestions?
asked by Bonnie 
hoke county
o A few minutes later, Susan tells Molly that she doesn’t like their coworker, Karishima, because she can’t understand half of what she says due to her accent. Molly agrees with Susan, and they both begin to laugh about Karishima’s clothing, and how
asked by larry 
Math
what percentage of 230 is 34.5
asked by Anonymous 
riddle
what came first a chicken or an egg..??
asked by Kim