Questions Asked on
June 21, 2010

chemistry
what volume (in ML) of a 0.150 M HNO3 solution is required to completely react wtih 35.7 mL of a 0.108 M Na2CO3 solution according to the following balanced chemical equation? Na2CO3(aq) + 2 HNO3(aq) > 2NaNO3(aq) + H2O(l) then, in the reaction above,
asked by samantha 
Math
A standard deck of cards is made up of four suits with 13 cards in each suit (total of 52 cards). If we randomly sample five cards from a standard poker deck, find the probability that all five cards selected are clubs.
asked by Jaime 
CHEM
Calcium nitrate will react with ammonium chloride at slightly elevated temperatures, as represented in the equation Ca(NO3)2(s) + 2NH4Cl(s) > 2N2O(g) + CaCl2(s) + 4H2O(g) What is the maximum volume of N2O at STP that could be produced using a 6.80mol
asked by JAS 
chemistry
The normal boiling point of acetone is 56.2 (degrees)C and the molar heat of vaporization is 32.0 kj/mol. At what temperature will acetone boil under a pressure of 50.0 mmHg?
asked by Jim 
chemistry
what volume (in L) of 0.150 M KCl solution is required to completely react with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the following balanced chemical equation? 2KCl (aq) + Pb(NO3)2 (aq) > PbCl2 (s) + 2 KNO3 (aq)
asked by samantha 
chemistry
what is the standard enthalpy formation of liquid diethylamine (CH3CH2)2 NH? N2O5(g) + 8CH4(g) ==> 2(CH3CH2)2NH(l) +5H2O(l), delta H= 1103kJ
asked by Ellie 
chemistry
the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas took 48sec. what is the molar mass of the gas? 32g/mol 37g/mol 24g/mol 16g/mol 48g/mol
asked by Ellie 
gen.science
A compound containing 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide and water. Which chemical or element will have the largest number of moecules?
asked by charlie 
college
Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8*10^5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant.
asked by Syra 
chemistry
Ethyl alcohol (CH3CH2OH) has a heat of fusion of 5.01 kj/mol. How much heat in kj is required to melt 137g of ethyl alcohol.
asked by Kim 
chemistry
which probably has the lowest boiling point at 1.0 atm pressure. A) C6H14 B) C3H8 C) C4H10 D) C5H12 E) C2H6
asked by Jim 
Trigonometry
I am trying to help my child out with a problem but yeah I am finding it veyr hard. Gabe is spending two weeks on an archaeological dig. He finds a fragment of a circular plate that his leader thinks may be valuable. The arc length of the fragment is about
asked by Britt 
Statistics
Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six
asked by Jacob 
11th grade
Describe how to find the multiplier for an exponential growth rate of 15%.
asked by melany 
history
How and why did England avoid the path of absolutism?
asked by alice 
MATH FOR LIBERAL ARTS
Determine a casino's expected net income from a 24hour period at a single roulette table if the casino's total overhead for the table is $50 per hour and if customers place a total of $7,000 on singlenumber bets, $4,000 on twonumber bets, $4,000 on
asked by CARMEN 
geometry
One side of a kite is 4 cm less than four times the length of another side. The perimeter of the kite is 59 cm. Find the lengths of the sides of the kite.
asked by Anonymous 
chemistry
Using a value of Ksp = 1.8 x 102 for the reaction PbCl2(s) = Pb+2(aq) + 2Cl(aq). If a solution has a current value of Keq of 1.2 x 102, which statement is true?
asked by Beth 
chemistry
Given the data below, determine the normal boiling point of COCl2. P1= 100 mmHg T1= 35.6 (degrees)C (delta) Hvap= 27.4 kj/mol
asked by Jim 
chemistry
When a 0.5725 g sample of Lysol was titrated with 0.100 M NaOH, and endpoint was obtained at 15.00 mL. What is the percent of HCL in the lysol sample?
asked by Alisha 
chemistry
Equilibrium is established between Br2(l) and Br2(g) at 25.0 (degrees)C. A 250.0 ml sample of the vapor weighs 0.486g. What is the vapor pressure of bromine at 25.0 (degrees)C, in millimeters of mercury.
asked by Jim 
college physics
A current of 2.7 A flows in a straight wire segment of length (2.5 cm) ˆı + (2.5 cm) ˆ in a uniform magnetic field of strength (1.7 T) ˆı . Find the magnitude of the force on the wire.
asked by essence 
Chemistry
At 700 K, the equilibrium constant for the reaction NO2(g) « 2NO(g) + O2(g) is Kc = 4.79×103 (M), and the rate constant for the reaction 2NO(g) + O2(g) ® NO2(g) is k = 3.13×10^3 M^2s^1. What is the rate constant for the reaction NO2(g) ® 2NO(g) +
asked by Miguel 
chemistry
The enthalpy of vaporization at 298 K for diethylether (C4H10C) is 26.0 kj/mol. How much heat would be required to vaporize 1.00 L of the ether at 298 K if its density is 0.714 g/L ? A) 250 kj B) 74.1 kj C) 186 kj D) 130 kj E) 440 kj
asked by Jim 
chemistry
A substance has a heat of fusion of 61.5 kj/mol and a heat of deposition of 167.4 kj/mol. What is 175 heat of sublimation in kj/mol? A) 61.5167.4 B) 61.5+ 167.4 C) 61.5 D) 167.4 E) 167.461.5
asked by Jim 
MATH FOR LIBERAL ARTS
Maria just inherited $10,000. Her bank has a savings account that pays 4.2% interest per year. Some of her friends recommended a new mutual fund, which has been in business for three years. During its first year, the fund went up in value by 12%; during
asked by CARMEN 
English
1. What kind of favorite movies do you like? 2. What kind of favorite movie do you like?  I like horror movies. (Are the questions and answer correct? Do we have to use the plural form, 'kinds'?) 3. What is your favorite kind of movies/movie?  4. It is
asked by rfvv 
chemistry
How much heat would be relaesed by the condensation of 5.40g of steam at 100 (degrees)C and the subsequent cooling of the water to 25(degrees)C? [(delta)Hvap=40.7 KJ/mol at 100(degrees)C; Cp for H2O(l) is 4.18Jg1 (degrees)c1] A) 12.2 kj B) 18.3 kj C)
asked by Kim 
chemistry
what is the solubility of Ag in water at 0 degrees celcius? what is it for calcium carbonate? and yellow brass?
asked by Stephanie 
critical thinking crt 205
Choose from the following three topics from the Opposing Viewpoints Resource Center. Note that there is one article in support and one in opposition listed for each topic. Immigration: Immigration Should Be Restricted. Paul Craig Roberts. Opposing
asked by ke 
chemistry
a 3.35g sample of solid silver reacted in excess chlorine gass to give a 4.45g sample of pure solid AgCl. the heat given off was 3.95kJ at constant pressure. what is th enthalpy of formation of AgCl?
asked by Ellie 
Caluclus
use implicit differentiation to find dy/dx xlny=y^3=lnx
asked by Trace 
math
a tourist in framce wasnts to visit 5 different cities. if the route is ransomly selested what is the probability that she will visit ciites in alphabetical order
asked by J 
Math
{lease help :) A contractor is considering a sale that promises a profit of $20,000 with a probability of .7 or a loss due to bad weather, strikes and such of $3000 with a probability of .3, what is the expected profit?
asked by Sally 
English
1. Who weighs more, Mr. Pitt or Emily?. Mr. Pitt weighs more than Emily. 2. Who is heavier, Emily or Bob?  Bob is heavier than Emily. 3. Who is the tallest of the three?  Mr. Pitt is the tallest. 3. Who is the taller of the two?  Emily is the taller fo
asked by rfvv 
Shurley English
I'm having kids who just finished second grade code sentences in their SummerBridge books in the Shurley style. We're having trouble with the word "my." How would this sentence be coded? "Roberto's is my favorite restaurant." Thanks
asked by Sara 
Computer
Does anyone know of a website where I could ask computer problems for free? I just tried asking on this one website, but it wanted me to pay... Thanks
asked by Amy~ 
Government Check
Out of 56 problems I'm unsure of 7 of them. Can someone please check? (= is my answer. 1.)Which of the following is not an essential element of the English political tradition? a.)Royal absolutism b.)Representation =c.)Limits to the power of the king
asked by Ariel 
math
the vertices of a figure are w(2,3), Y(3,1), and z(3,4). What are the vertices of the transformed image ofter a reflection over the xaxis? can you plz explain to me, how to solove this
asked by jessica 
Math
An eon of time is defined as 1 billion years (1x10 9yrs) in scientific notation. How long is this in minutes? (Assume 1 year =365.25days.
asked by Millicent 
business
I41: An inexperienced bookkeeper for the Soggy Ground Construction Company has prepared the following balance sheet. Soggy Ground Construction CompanyBalance SheetFor the Year Ended December 31, xxxx Current Assets Cash $149,500 Accounts receivable (net)
asked by shirley 
Accounting
Please describe how the following transactions affects the accounting equation: Provide service for cash Increase, decrease of no change from the following accounts Assets, Liability and Owners Equity
asked by John 
chemistry
a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ of heat at a constant pressure. what is the identity of the hydrocarbon?
asked by Ellie 
PRACTICAL EXERCISE LOCAL STANDARDS AND REGULATIONS
2. Mrs. Carroll and Ms. Howard decide to divide all profits and share all losses using a fixed ratio. If the ratio agreed upon is in proportion to their original investment, what would be Ms. Howard’s share of a $60,000 endofyear profit? (Hint: The
asked by Jalisa j 
chemistry
what is the balanced equation for potassium iodide and solid zinc in an acidic solution
asked by Anonymous 
Macroeconomics,
List and explain the three tools used by the Fed to manipulate the supply of money. In each case show how the money supply can increase/decrease.
asked by mercedes 
chemistry
What is the ph of a 0.00100 M HCl solution?
asked by Alisha 
Business
Sales of a product are influenced by the salesperson’s level of education and gender, as well as consumer income, ethnicity, and wealth. a. Formulate this statement as a multiple regression model (form only, without parameter estimation). b. Specify
asked by Anonymous 
Algebra  Math
The profit function for hang gliding serving p(x) = 0.4x^+fxm. f represents set up fee for excursions,m rental, p profit, x# of flights in month. If $40.00 charged for set up fee, and $800.00 rental fee per month. What is the equation for the profit
asked by Susan 
English
1. The temperature here is of medium. 2. The temperature here is of average. 3. The temperature here is neither low now high. (Would you correct errors?)
asked by rfvv 
English
1. Who is the oldest?  They are the same age. 2. Who is older, Betty or Tom? They are (of) the same age. (Can we add 'of'? Are the questionsa and answerws right?) 3. Who is heavier, Emily or Mary? 31. Both are the same weight. 32. They are the same
asked by rfvv 
geometry
Given: ~ with altitudes CR and ZS. ZS = 12, XY = 15, YZ = 18 and AB = 20, find the measure of CR. (2 points) A) 25 B) 9 C) 17 D) 16
asked by chris 
PSY 230
Psy 230 Personal Narrative
asked by Brenda 
Algebra
Need help with these 21. Find the possible values of a, of the distance between the points is 5, and the coordinates are (1, 1) and (4,a) 22. The Pythagorean Theorem works only for _______ triangles. Right? 25. Three sides of a triangle are 2, 4, and 8.
asked by mysterychicken 
Macroeconomics,
If nominal GDP is $300 billion and the money supply is $20 billion, What must be the velocity? (b)If the money supply decreases and the velocity does not change, what will happen to nominal GDP?
asked by mercedes 
Algebra  Math
y=3xx2 use the values of y provided in the table x y 1 0 1 2 3 4 Place your graph(s) here
asked by Susan 
statistics
If a major Internet store wants to estimate the percentage of adult Internet shoppers in order to determine the maximum impact of Internet shoppers on its sales, what amount of the shoppers should be used as a sample?
asked by Trish R 
college
A company is considering the purchase of a forest that is estimated to yield an annual return of $50,000 for 10 years, after which the forest will have no value. The company wants to earn 8% on its investment and set up a sinking fund to replace the
asked by Gibbons 
math
Consider the function defined below. y = 2t3  4t2 + 3 (a) Calculate the second derivative. y '' = (b) Calculate the third derivative. y ''' =
asked by Jack 
algebra
simplify: sqrt (16)/sqrt (4) + sqrt (2) a) 8  2 sqrt (2) b) 8  sqrt (2) / 2 c) 2 d) 4  2 sqrt (2)
asked by ami 
algebra
3(r+2)+5(r+t2)
asked by Anonymous 
Bio
The ultimate source of the energy in food ___________________ A)is ATP B)is the sun C)is producers D)is plants E)is consumers
asked by Joe 
Computer Question
Does anyone know where I can remove the memory card? from a computer? I tried looking it up but all I get is those memory cards for cameras... I'm not sure what it is, except that it contains computer memory. Also, I remember someone saying that I need to
asked by Amy~ 
Statistics
In a particular chisquare goodnessoffit test there are four categories and 200 observations. The significiance level is 0.05. How many degrees of freedom are there? What is the critical value of chisquare? compute the value of chisquare?
asked by Rhonda Moore 
Statistics
Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six
asked by Jacob 
pre algebra
tom rests a 32foot ladder against the wall the ladder forms a 61degrees angle with the ground. how high up the wall is the ladder?
asked by lavena 
math
As a restaurant owner there are many decisions that you need to make on a daily basis, such as where to keep inventory levels. You wish to replenish your stock of dishes by purchasing 250 sets for your restaurant. You have two dish design from which to
asked by Ash 
Math
If a tank of water is leaking at a rate of 9.32mL/sec, how fast is this rate in L/hr?
asked by Shanda 
Lynn
What are some pros and cons of using each of the following methods when solving equations? graphing using substitution or elimination I hope to gain additional thoughts on this, thanks.
asked by Math (Algebra) 
chemistry
Earl N. Meyer found that it took 26.54 mL of a 0.0100 M KOH solution to reach the equivalence point for the titration of 25.00 mL of HCL. What is the molarity of the HCL?
asked by Alisha 
business
What cues might a manager have that suggest there is a problem with the design of an organization? Is changing an existing organization a different task from designing a new structure?
asked by Anonymous 
bio
what is behaviral isolation
asked by john 
NCH
In most countries a child(start).... school at six and(staying).... for about five years in a primary school. *chia Ä‘á»™ng tá»« trong ngoáº·c
asked by nhi 
algebra
d=3t2
asked by Anonymous 
sociology
Culture at WalMart on pg. 68. Western companies often impose western culture on the country in which the business is launched. Locate an article that contains a similar situation as WalMart and summarize the findings. What is your analysis of the
asked by Anonymous 
math
15th October 2007 is on Monday.Which day is on 15th October 2008?Find in the form of arithmetic progression.
asked by Nash 
anatomy
(a) what are some of the physiology effects of infusing 500ml 0.9% glucose intravenously over an hour. (b)what are some of the physiology effects of infusing 500ml 5% glucose intravenously over an hour.
asked by secret 
math
1. Consider the following equation. xy + 7x + 5y = –8 (a) Differentiate both sides with respect to x to complete the following. ( blank )y ' + y + blank =0 (b)Solve for y ' in terms of x and y. (c) Calculate dy/dx at the point (4,4). Can anyone help me
asked by Diana 
math
A refrigerator has a width of 3 feet. The angle of elevation from the bottom corner to the opposite corner 65 degreeswhat is the height of the refrigerator.
asked by joe wallace 
precalculus
Prove 3+4+5+...+(n+2) = [n(n+5)]/2 for n>4 Do the first step in a proof by induction.
asked by James 
algebra
simplify the following radical expression: 3 sqrt (27) a) 0 b) 3 c) 3 d) no solution exists
asked by ami 
artplease help
I have spent a lot of time researching and I can't find this. I wrote a paper about the mona lisa and the last supper. I need a sentence from each that tells how they reflect or define the dadaism period. Can someone please help with one or point me in the
asked by crystal 
math
n!/(n2)!=90
asked by mr 
chemistry
True or False CH4 probably has a lower boiling point than SnH4
asked by Kim 
Com220
Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient outcome is one measure of quality. What role do health care workers play in determining quality care?
asked by Heidi 
math
I'm trying to help my child with this problem.. 1.A bird is flying around the world at a rate of 12.2ft/sec. How many days will it take to complete its journey? (circumference of earth=25,000 miles. 2. A deep space probe is traveling at a velocity of
asked by Amina 
algebra
julian owns an ice cream parlor. for pricing purposes he need to kno how much ice cream a waffle cone holds. the cone is 5 1/2 inches deep and has a diamete of 3 inches. whatis the volume of the waffle come..round to the nearest tenth is neccesary
asked by alanaxoxo 
Math
A perfume company wants to dispense 57.3 quarts of a new fragrance into small vials. How many 25mL vials can they fill (rounded to the nearest full vial)
asked by Shanda 
Math
If a satelite orbits the eart at a velocity of 7.5x10 6 km/hr, (in scientific notation) this would be the same as how many ft/s?
asked by Millicent 
To "lavena" or "jessica" or "alanaxoxo" or whoever
Please post in one name only. If you continue musical names, you could be setting yourself up for banishment.
asked by Writeacher 
pre algebra¢¾
julian owns an ice cream parlor. for pricing purposes he need to kno how much ice cream a waffle cone holds. the cone is 5 1/2 inches deep and has a diamete of 3 inches. whatis the volume of the waffle come..round to the nearest tenth is neccesary
asked by lavena 
english
write a review of his theme, along with how this poem relate to your own life experience. I will arise and go now, and go Innisfree, And a small cabin build there, of clay and wattles made: Nine beanrows will I have there, a hive for the honeybee, And
asked by mercedes 
HCA 210
I am having trouble figuring out how to write a proposal for a new health care system. Any tips on how to write a proposal?
asked by Mari 
Algebra  Math
Use a table to find at least 3 points using any value for x? y=2x5 x y 1 1 3
asked by Susan 
Statistics
A driving machine was employed to hit a sample of 41 each of two different brands of golf balls using the same force each time. The research team measured the distance between the point of impact and where the ball eventually came to rest on the ground.
asked by Randi 
English
Those familiar with the story Animal Farm Please help me come up with a thesis for the prompt: Napoleon Continues to announce new rules that seem less than desirable. The animals seem confused and somewhat annoyed, yet none protest or dare to speak the
asked by Lolerskater 
english
make sentences with words starting with alphabet az
asked by simi 
grammar
Is this a comma splice or is it correct? I think it is correct.
asked by The more I know about you, the better I like you. 
Calculus
Find the derivative. y = ln(x^4 + 6x + 7) y '(x) =
asked by Daisy 
psychology 230
describe how one of the theories from the big five might explain the evolution of your personality.
asked by sallie 
accounting
Why does the source document discloses information about the consumers?
asked by ^Tasha 
algebra
solve: sqrt (m) + 7 = 5 a) (2) b) none or 0 c) (2) d) (4)
asked by sean 
algebra
simplify: sqrt 2/7 a) sqrt (7) b) 2 c) sqrt (2) d) sqrt (14) / 7
asked by sean 
Law
Joe Researcher asks for access to patient records as part of a research project. What should the health information manager do? A. Say yes—access for research is permitted. B. Say no. C. Tell Joe to submit his request to an institutional review board if
asked by Anonymous 
Communication and Gender Studies
How does the language we use, including the actual words that we have to name and describe things build our stereotypes?
asked by Audrey 
chemistry
Silicon oils are used in water repellents for treating tents, hiking boots, and similar items. Explain how they function.
asked by Jim 
business
Nataly works in a Young Womens Fasions ia department store. Within this department she specializes in knitwear. This is a example of which of the following departamental schemes? Product,customer or Custumer,Product.
asked by Rosanna 
history
The impact of segregation in washington dc after the civil war. were can I find information?
asked by Isaiah 
Claculus
find the equation of the tangent line to y^3xy=6 at the point (7,2)
asked by Trace 
HISTORY
The Civil War and its impact on the District in the late 19th century... Help Please I'm writing an essay and i need info!
asked by Brittany 
economics
What effects will this change have on the exchange rate of the canadian dollar in terms of the us dollar? Good Canadian real estate market sends a signal to American construction companies.
asked by Ariza 
Biology
another way to word: the effects of temperature on human and fungal amylase
asked by Kelly 
Macroeconomics,
If nominal GDP is $300 billion and the money supply is $20 billion, What must be the velocity? (b)If the money supply decreases and the velocity does not change, what will happen to nominal GDP?
asked by mercedes 
Macroeconomics,
Is NAFTA good/bad for American? What should the Obama Administration do about it?
asked by mercedes 
Macroeconomics,
Having a strong or a weak dollar, which is better for America? Why?
asked by mercedes