Homework Help: College

college
organic chemistry 121-------------how to do dimensionalysis solving..
Monday, April 5, 2010 at 5:23pm

college algebra
Am not sure how to plug in e^e on calculator
Monday, April 5, 2010 at 2:38pm

college algebra
3^x-2=11
Monday, April 5, 2010 at 1:27pm

college algebra
Solve: 2^x-3= 32^x+1
Monday, April 5, 2010 at 11:19am

statistics
In an election for student council president at Russell Sage College, 80 students were polled and asken for whome the planned to vote. the following results of the poll were Allison 22, Emily 18, Kimberly 20 Johanna 14, Other 6. If one student from Russell Sage College is ...
Monday, April 5, 2010 at 7:52am

college American Government
How should the United States prosecute its war against global terrorism over the next several years? Should the United States become more aggressive in taking preemptive action in accordance with the Bush Doctrine? Or should the United States be more diplomatic in its ...
Monday, April 5, 2010 at 4:28am

college
To what extent does the War on Terrorism represent a break with previous United States foreign and defense policy?
Monday, April 5, 2010 at 4:18am

college
What role should America�s ideals play in its national security policy? Include historical, current, and hypothetical cases in the analysis.
Monday, April 5, 2010 at 4:17am

writing
I have to write an eight-sentence paragraph that fully develops this topic. A high school diploma is important to my future...... (i know it's not that great of a topic but i have no options) but i keep going in circles and i can't get my ideas together .I keep ...
Monday, April 5, 2010 at 1:03am

college physics
How to do this problem? Compute the number of turns of wire on a coil whose resistance measures 15.5 ohms, and which is wound around a 2-inch diameter form in a single layer of 28 gage enameled copper wire.
Sunday, April 4, 2010 at 8:43pm

College Accounting
Night office manager's returned $100 worth of supplies to Gordan office supplies. Night received a $100 reduction on the account. Which to account was affected
Sunday, April 4, 2010 at 8:33pm

english
I have to write an eight-sentence paragraph that fully develops this topic. A high school diploma is important to my future...... but i keep going in circles and i can't get my ideas together .I keep wondering off the topic. Can anyone help me write this down. my main ...
Sunday, April 4, 2010 at 5:50pm

College Chemistry
HELP ME PLEASE! 1. Calculate the weight of 16.2L of pure SO2 gas at STP. (answer in grams) a.16.2 b.31.8 c.39.5 d.46.3 e.64.1 2.A volume of 725mL of a gas is collected at 105Celsius and 745torr. The gas weighs 1.93 grams. What is the Gas? a.Fe2 b.Ar c.Kr d.Xe e.Rn
Sunday, April 4, 2010 at 3:50pm

college
I am having difficulties doing an eguation for two different times/seconds on an object that is thrown in the air......please help!
Sunday, April 4, 2010 at 1:59pm

college
One Number Is 3 Times Another Number. If The Sum Of The Reciprocals Of The Numbers Is 1/6, What Are The Two Numbers?
Sunday, April 4, 2010 at 2:59am

college
A 1.362 g sample of an iron ore that contained Fe_3O_4 was dissolved in acid and all the iron was reduced to Fe^2+. the solution was then acidified with H_2SO_4 and titrated with 39.42 mL of 0.0281 M KMnO_4 , which oxidized the iron to Fe^3+. Net ionic equation 5Fe^(2+)+MnO_4...
Saturday, April 3, 2010 at 3:40pm

college astronomy
whats the effect and the cause of retrograde motion in earths sky on both inferior and superior planets?
Friday, April 2, 2010 at 6:32pm

College Chemistry
1) The concentration of the aluminum ion in a test solution is 0.10M. Using the Ksp for aluminum hydroxide (3. x 10^-34), calculate the concentration of hydroxide needed to precipitate aluminum hydroxide. From the concentration of the hydroxide, calculate the pH of the ...
Thursday, April 1, 2010 at 8:44pm

College accounting
In order to provide snacks for guests on a 24-hour basis, Night sign a contact with Snack Attack. Snack Attack will install vending machines with food and drinks and pay a 10% commission on all sales.Estimated payments are made at the beginning of each month. Night received a ...
Thursday, April 1, 2010 at 8:07pm

HISTORY
I am working on a paper for my college HIS class, I have found everything I need but am struggling finding information to answer one area..if someone could point me into the direction of some useful information, I would really appreciate it! : How was the conflict between ...
Thursday, April 1, 2010 at 2:12pm

stats
8-A bakery stated that the average number of breads sold daily is 3000. An employee thinks that the actual value might differ from this and wants to test this statement. The correct hypotheses are: (1) H0 : ¦Ì = 3000 H1 : ¦Ì not= 3000 (2) H0 : &...
Thursday, April 1, 2010 at 4:45am

college chemistry
CH4 + 2 Cl2--> CH2Cl2 + 2HCl Cl-Cl bond energy: 242 kj/mole 1. Calculate the amount of energy (Joules) needed to break a single Cl-Cl bond. 2. Calculate the longest wavelength of light (meters)that can supply the energy per photon necessary to break the Cl-Cl bond.
Wednesday, March 31, 2010 at 10:30pm

statistics
the heights of 1000 students in a college are normally distributed with a mean 5’10" and SD 2". Use 68% for the region from the mean to 1-SD on either side; 94% for the region from the mean to 2-SD on either side and 98% for the region from the mean to 3-SD on ...
Wednesday, March 31, 2010 at 9:12pm

college calculus
a point is moving on the graph of xy=30. when the point is at (6,5), its x-coordinate is increasing by 6 units per second. how fast is the y-coordinate changing at the moment
Wednesday, March 31, 2010 at 2:06pm

stats
Suppose the mass of college students can be modeled by the normal distribution. We believe the mean of the normal distribution is 72 kg. We randomly sample 18 students and find an average of 69 kg and a standard deviation of 4kg. A. The standard error of óx is 0.9428 B...
Wednesday, March 31, 2010 at 1:24pm

stats
In a sample of 500 college students fifty percent of all college students attend schools within 50 miles of their homes. The probability that the population proportion will be between 0.45 and 0.55 is (1) 0.4875 (2) 0.9818 (3) 0.4909 (4) 0.9750 (5) 0.5000
Wednesday, March 31, 2010 at 1:23pm

college, Astronomy
Compared with the strength of Earth's gravity at its surface, how much weaker is gravity at a distance of 13 Earth radii from Earth's center?
Wednesday, March 31, 2010 at 1:12pm

college chemistry
How do you calculate delta[S2O8 2-] in iodine clock reaction?
Wednesday, March 31, 2010 at 12:34pm

college calculus
1) each side of a square is increasing at a rate of 6cm/s. At what rate is the area of the square is 16 cm^2? 2)the radius of a sphere is increasing at a rate of 4mm/s.How fast is the volume increasing when the diameter is 80mm? 3)A particle moves along the curve y= (1+x^3)^1/...
Wednesday, March 31, 2010 at 1:02am

College Chemistry
If 69.3g of magnesium chloride were produced from a process with a known yield of 78.3%, find the mass of carbon tetrachloride in grams that was used. Equation: 2CCl4 + MgCrO4 -> 2COCl2 + CrO2Cl2 + MgCl2 I was able to solve it but I just don't understand why it's ...
Wednesday, March 31, 2010 at 12:59am

college math 205
Find the amount of each payment to be made into a sinking fund when $75000 @ 6% compounded semiannually for 4.5 years.
Tuesday, March 30, 2010 at 10:52pm

College Chemistry
a) Water drops, sitting on your skin after a dip in a swimming pool, evaporate. Identify the system and its surroundings for the above process and state the direction of heat transfer. Is the process endothermic or exothermic. Would the system be the skin?? whats what?? And im...
Tuesday, March 30, 2010 at 9:31pm

math
HI, I am having trouble working this problem. This is the question: Two measurements are given. Find the absolute difference and then find the rlative difference as a percentage. Assume that the first quantity is the compared value and the second qualitity is the reference ...
Tuesday, March 30, 2010 at 9:06pm

College physics 1
A 40.0-kg boy, riding a 2.50-kg skateboard at a velocity of +5.30 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.00 m/s, 9.50o above the horizontal. Ignore any ...
Tuesday, March 30, 2010 at 7:08pm

college physics (inertia)
As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^-(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ...
Tuesday, March 30, 2010 at 6:01pm

College chemistry
103.5 mL of hydrogen are collected over water at 22.2 degrees Celsius and 758.2 torr from reaction with 0.1356 grams of alloy. calculate the number of moles of dry hydrogen gas that were collected.
Tuesday, March 30, 2010 at 2:47pm

College Chemistry
Using this equation: CH4(g)+2O2(g)---> CO2(g)+ 2H2O(l) What is the value of Enthalpy( triangle H) if 15.00g of O2 is reacted?? How do i set up the mole to mole ration?? with what am i comparing it too??
Tuesday, March 30, 2010 at 2:38pm

College Chemistry
Part a: What mass of solid CuCL2 is required to prepare 450.0mL of 0.125M CuCl2 solution?? Part B: What are the concentrations of Cu +2 ions and Cl- ions in the above solutions. I understand part a, and got the right answer. i need help understanding part b.
Tuesday, March 30, 2010 at 2:19pm

college
The minimum daily values (MVD)for certain foods are given. They are based on a 2,000 calorie day diet. Find decimal and fractional notation for the percent notation in each sentence. (a) 1 ounce of Tostitos provides 9% of the Mdv of fat. (c)1/2 cup of Campbells' New ...
Tuesday, March 30, 2010 at 2:19pm

Elementary math College
A bag contains 7 red chips and 9 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color?
Tuesday, March 30, 2010 at 1:33pm

Chemistry
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. • Explain the chemical process that occurred...
Tuesday, March 30, 2010 at 4:11am

college
an investor is looking for 4 year investment.the share of skylark company is selling for rs 75.they have plans to pay a divedend of rs 7.50 per share each at the end of first and second yaears and rs 9 and rs 15 respectively at the end of third and fourth years.if the ...
Tuesday, March 30, 2010 at 1:34am

corporation tax
FACTS: Rachel was your college roommate. After graduating, she started her own business, a bakery and deli that has become the most popular and successful bakery in town. She hears that you are now a CPA handling business tax clients, and comes to your office. ¡°I&...
Tuesday, March 30, 2010 at 12:17am

College Alegbra
Trying to figure out the problem in this word proble. The cost, in million of dollars to remove 75% of the pollution in a lke model by c+6000/200-2x?
Monday, March 29, 2010 at 8:36pm

College physics
A 3.5-A current is maintained in a simple circuit with a total resistance of 1500 W. What net charge passes through any point in the circuit during a thirty second interval?
Monday, March 29, 2010 at 6:55pm

college chemistry
how could I determine experimentally whether all the potassium chlorate had been decomposed?
Monday, March 29, 2010 at 6:18pm

college algebra
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in feet (as if...
Monday, March 29, 2010 at 5:24pm

College Chem
4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl What are 3 ways you can speed the reaction in this equation?
Monday, March 29, 2010 at 2:28pm

College Chem
4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl6. For the reaction in problem 4, Heat of Reaction = -118.3 kcal/mol. Identify whether this is an exothermic or endothermic reaction. Calculate the Heat of Reaction when 6.00 g of Cl2 are used in the reaction.
Monday, March 29, 2010 at 2:26pm

college
y - y-3 3 ___________ 4 + 2 9 3
Monday, March 29, 2010 at 1:42pm

college algebra
state the domain of f(x) = (x+3)/(x-1)
Monday, March 29, 2010 at 1:03pm

college
A line of dancing on Sesame Sreeet across the screen like a chorus line. do the commas go between on,Sesame
Monday, March 29, 2010 at 12:24pm

college physics
Suppose a 69 kg person stands at the edge of a 7.8 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1600 kg*m^2. The turntable is at rest initially, but when the person begins running at a speed of 3.7 m/s (with ...
Monday, March 29, 2010 at 9:50am

GEOMETRY
Decide which of the variables described is likely to have a normal or near-normal distribution. a. The number of courses remaining until graduation for the students in a small liberal arts college b. The SAT mathematics scores for students in an advanced placement mathematics ...
Sunday, March 28, 2010 at 11:03pm

college chemistry
EPA acidity test can be performed by titrating water sample to a pH of 8.2. What titrant in what concentration would you suggest for EPA acidity determination?
Sunday, March 28, 2010 at 6:21pm

College Chemistry
A 0.05 molal aqueous solution boils at 373.102 K. What is the salt in question? a. AlCl3 b. NaHSO3 c. MgCl2 d. NH4Cl e. NaCl I guessed NH4Cl and got 3 points off. I used the formula delta T=K boiling point X molality
Sunday, March 28, 2010 at 3:52pm

College Chemistry
The boiling point of a liquid at atmospheric pressure is the temperature: a. at which bubbles of vapor expand within the liqud b. at which the liquid solidifies c. at which the vapor pressure first exceeds the critical temperature d. at which the vapor pressure is equal to the...
Sunday, March 28, 2010 at 3:50pm

college Chemistry
An aqueous solution of hydrogen peroxide, H202 (MW=34.01amu), is labeled 10.0% by weight. What is the molal concentration of H202? All I really know is that molality = moles of solute per kilogram of solution
Sunday, March 28, 2010 at 3:49pm

college
Two parallel plates, each with zero mass and an area of 10,000 cm2 are set 0.1 mm apart and the space between them is filled with a Newtonian fluid. The upper plate is pushed in the direction shown with a constant force sufficient to accelerate a mass of 1 kg by 1 m/s2, which ...
Sunday, March 28, 2010 at 2:28pm

environmental science for college
Starting with a hypothetical population of 14,000 people and an even age distribution (1,000 in each age group from 1-5 to 66-70 years), assume that the population initially has a total fertility rate of 2.0 and an average life span of 70 years. Using the spreadsheet for ...
Sunday, March 28, 2010 at 7:53am

College Chem
If equal masses of O2 and N2 are placed in identical containers at the same temperature, which of the following statements is (are) true? a. both flasks contain the same number of molefules b. the pressure in the N2 flask is greater than in the other container c. there are ...
Sunday, March 28, 2010 at 12:58am

College Chem
If equal masses of O2 and N2 are placed in identical containers at the same temperature, which of the following statements is (are) true?
Sunday, March 28, 2010 at 12:51am

College Chem
The boiling point of water at 756 mm Hg is 99.85 degree C. What mass percent of surcrose (C12H22O11) should be present to raise the boiling point to 100.00 degree C at this pressure?
Sunday, March 28, 2010 at 12:49am

letter format help
what is the format for an appeal letter for college disqualification.
Saturday, March 27, 2010 at 9:53pm

College Admission
I am currently outside USA. Now in Asia we follow the Cambridge igcse curriculum. If I move to USA can I still get into an Ivy League college?
Saturday, March 27, 2010 at 2:54pm

college
Bayside insurance offers two health plans. Under plan A, Giselle would have to pay the first $160 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $200, but only 20% of the rest. For what amount of medical bills will plan B save Giselle ...
Saturday, March 27, 2010 at 12:58am

college trig
From a point on the ground a person notices that a 110-ft tree on top of a hill subtends an angle of 3°. If the angle of elevation to the bottom of the tree, represented by angle A in the figure below, measures 37°, find the height h of the hill
Friday, March 26, 2010 at 10:04pm

algebra
Sandy’s Sweatshirt Shop sells college sweatshirts. White sweatshirts sell for $18.95 each and red ones sell for $19.50 each. If receipts for the sale of 30 sweatshirts total $572.90, how many of each color did the shop sell?
Thursday, March 25, 2010 at 10:49pm

college
Four hundred people apply for three jobs. 130 of the applicants are women. (a) If three persons are selected at random, what is the probability that all are women? (b) If three persons are selected at random, what is the probability that two are women? (c)If three persons are ...
Thursday, March 25, 2010 at 9:36pm

College Chemistry
Given the following equilibrium constants, Ka (NH4^+)=5.6*10^-10 Kb (NO2^-)=2.2*10^-11 Kw=1.00*10^-14 determine the equilibrium constant for the reaction below at 25*C. NH4^+(aq)+NO2^-(aq)f HNO2(aq)+NH3(aq)
Thursday, March 25, 2010 at 9:06pm

English(college)
Can you please help me? The direction goes as follows; Edit the following sentences to correct errors in pronoun reference. In some cases you will need decide on an antecedent that the pronoun might logically refer to. 1) Our German conservation group is made up of six people...
Thursday, March 25, 2010 at 5:26pm

English
A married couple met at Juanita College in Huntingdon, Pennslvania. They are both left-handed,and they have set up a scholarship for needy left handed students attending Juanita. Here is my answer does it make sense? A married couple who met at Juniata College in Huntington, ...
Thursday, March 25, 2010 at 10:47am

college
For a normal curve with mean 5 and standard deviation 6, which of the following parts of the normal curve will have an area of approximately 68%
Thursday, March 25, 2010 at 6:21am

college chemistry
a student did an alkalinity determination correctly,except that the sample titrated had a volume of 90.0 mL. Volume A was found to be 4.50 mL and Volume B was 7.00 mL. 1)Calculate the Alkalinity value from these data and then calculate the correct value.2)what percent error ...
Thursday, March 25, 2010 at 1:12am

College Physics
A 315 kg object is lifted 12 meters by a motor in 15 seconds. How much power does the motor deliver?
Wednesday, March 24, 2010 at 11:14pm

College Physics
A 0.145 kg baseball is moving at a speed of 15.0 meter/sec east toward the bat. The bat has 3.00x10^-3 seconds contact with the ball. As a result the ball flies back at 25.0 meter/sec west. What was the force (vector!) the bat exerted on the ball?
Wednesday, March 24, 2010 at 11:13pm

college philosophy (Mill)
how can mill say that “there is no parity between the feeling of a person for his own opinion, and the feeling of another who is offended at his holding it; no more than between the desire of a thief to take a purse, and the desire of the right owner to keep it”? ...
Wednesday, March 24, 2010 at 8:02pm

college history
if the industrial revolution increased production why did the laborers need to work such long hours weren't they producing more than before?
Wednesday, March 24, 2010 at 7:57pm

College Physics
A 315 kg object is lifted 12 meters by a motor in 15 seconds. How much power does the motor deliver?
Wednesday, March 24, 2010 at 7:39pm

college chemistry
For the following reaction: PCl5(g)<===> PCl3(g) + Cl2(g) Kc=.058 If the initial concentration of PCl5(g) is .160M, calculate the equilibrium concentrations of all the components. (use quadratic)
Wednesday, March 24, 2010 at 7:26pm

college
solve each equation 1/5y2-2=-3y
Wednesday, March 24, 2010 at 5:27pm

college chem
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5? can someone please help me with steps to get the answer
Wednesday, March 24, 2010 at 9:31am

college chem
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5
Tuesday, March 23, 2010 at 11:54pm

College Chemistry
Calculate the ratio of NaF to HF required to create a buffer with pH=3.95. Also, can you please explain in a nutshell the whole concept of buffers? Thanks!
Tuesday, March 23, 2010 at 10:44pm

college
HOW DOES A PERSON AUTONOMY AFFECTS THEIR SENSE OF FREEDOM
Tuesday, March 23, 2010 at 9:00pm

business
How will you apply the knowledge you have gained about effective business communication in you current jobs and college courses
Tuesday, March 23, 2010 at 6:49pm

College Chemistry
Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 215 mg/L. I calculated the molarity as 1.58*10^-3 and the Ka as 1.58*10^-10. I did ICE and i got the pH as 6.3, but it was wrong. Do you know what I...
Tuesday, March 23, 2010 at 6:22pm

statistics
Find the indicated binomial probabilities. Round to the nearest 3 decimal places. In a local college, 20% of the math majors are women. Ten math majors are chosen at random. 1) What is the probability that exactly 2 are women? 2) What is the probability that 2 or less women ...
Tuesday, March 23, 2010 at 2:20pm

college
explain how mccarthyism affected the lives and political thinking of people in the u.s
Tuesday, March 23, 2010 at 10:59am

College Physics
A 5.0 gram coin is placed 5.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 RPM is reached and the coin slides off. A.) What is the coefficient of ...
Tuesday, March 23, 2010 at 1:03am

college physics
A(n) 13,300 lb railroad car traveling at 7.4 ft/s couples with a stationary car of 6790 lb. The acceleration of gravity is 32 ft/s^2. What is their velocity after the collision (ft/s)? And what impulse did the first car receive? Answer in units of lbs. Any help would be ...
Tuesday, March 23, 2010 at 12:33am

College Physics
An electron is accelerated through 2550 V from rest and then enters a region where there is a uniform 1.30 T magnetic field. What are the maximum and minimum magnitudes of the magentic force acting on this electron?
Monday, March 22, 2010 at 11:31am

ocean county college
A 150 g sample of metal at 55.0 C raises the temperature of 150 g of water from 23.0 C to 35.0 C. Determine the specific heat of the metal in J/g C. Hint: #1 First find heat absorbed by water using formula q = mass x specific heat x change in temp (of water). #2 Use this value...
Sunday, March 21, 2010 at 8:10pm

com140
how will you apply the knowledgeyou have gained about effective buisness communication in your current or future job and college courses?
Sunday, March 21, 2010 at 7:29pm

College Chemistry
I don't have an answer.
Sunday, March 21, 2010 at 6:27pm

college/Algabra
divide: (12x^3-42x^2-30x-3)/(6x+3)
Sunday, March 21, 2010 at 5:27pm

college
-2x>1/9
Sunday, March 21, 2010 at 4:24pm

college
what dose harold rosenberg mean when talk about "spectator vs viewer".
Sunday, March 21, 2010 at 4:05pm

College
Case Eastern Junior College awarded 26 varsity letters in crew, 15 in swimming, and 16 in soccer. If awards went to 46 students and only 2 lettered in all sports, how many students lettered in two of the three sports?
Sunday, March 21, 2010 at 9:20am

Math! plz help!
Rebecka borrowed $3500, 5000, 3500,& 4500 from her dad on September 1 of each of four successive years for college expenses. Rebecka and her dad agreed to a loan at the rate of 8.75% compounded quarterly. If it is now 2 years from the last day that she borrowed money, how much...
Saturday, March 20, 2010 at 6:01pm

College Chemistry
Given: 2Al2O3 (s) 4Al (s) + 3O2 (g) °H = 3351.4 kJ, what is °H for the formation of 12.50 g of aluminum oxide? Help please.
Saturday, March 20, 2010 at 5:36pm

Math!
Rebecka borrowed $3500, 5000, 3500,& 4500 from her dad on September 1 of each of four successive years for college expenses. Rebecka and her dad agreed to a loan at the rate of 8.75% compounded quarterly. If it is now 2 years from the last day that she borrowed money, how much...
Saturday, March 20, 2010 at 4:37pm

College Chem
With a relative standard deviation of 32.51+_ 0.15. Cant the result of 32.14 and 32.75 be discarded because they are out of the .15 range?
Friday, March 19, 2010 at 6:29pm

College Chem
Is the percentage of sodium in pure table salt 39.34%?
Friday, March 19, 2010 at 4:44pm

Statistics
If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the point in the distribution in which 75.8% of the college ...
Friday, March 19, 2010 at 3:53pm

College Chem
Please tell me if this is correct...Finding the mean, the average deviation from the mean, the standard deviation from the mean, and the relative deviation from the mean...of 10.1, 10.4 and 10.6 Mean-10.4 Average deviation-0.167 Standard deviation-0.25 Relative deviation-2%
Friday, March 19, 2010 at 3:44pm

college physics
In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or moderating) a neutron, calculate the ratio of a neutron's final ...
Thursday, March 18, 2010 at 11:08pm

college physics
A 0.580-kg bucket rests on a scale. Into this bucket you pour sand at the constant rate of 85.0 g/s. A)If the sand lands in the bucket with a speed of 4.30 m/s, what is the reading of the scale when there is 0.770 kg of sand in the bucket? B)What is the weight of the bucket ...
Thursday, March 18, 2010 at 11:04pm

College Math
By looking at two linear equations, how can you tell that the corresponding lines are parallel?
Thursday, March 18, 2010 at 11:01pm

college
Post a 200- to 300-word response to the following: Discuss an environmental problem that is significant. What are some causes? Are any of these causes related to human values and environmental ethics? What specifically do they (the causes) say? Explain.
Thursday, March 18, 2010 at 5:15pm

college
For a distribution _ _ X = 100 and s=4. If x= X then z=? If x = 90, then z =? If z=2, then x=? If z=1.5, then x =?
Thursday, March 18, 2010 at 8:25am

Statistics 250
The NCAA men's basketball season starts with 327 college teams all dreaming of making it to "the big dance" and attaining the National Championship. Sixty-four teams are selected for the tournament, and only one wins it all. (Assume that every team has an equal ...
Thursday, March 18, 2010 at 4:48am

college
to how much water should 50.0 ml of 12.0 M HCl acid to be added to produce a 4.00 M solution?
Thursday, March 18, 2010 at 1:28am

College Chem
Impure sample of table salt that weighed 0.8421g, when dissolved in water and treated with excess AgNO3, formed 2.044g of AgCl. What is the percentage of NaCl in the impure sample? Do I need the molecular weight to start this equation? Where do I start?
Wednesday, March 17, 2010 at 5:37pm

College Chem
When a0.269g sample of a barium compound was treated with excess H2SO4, 0.0891g of BaSO4 formed. What is the percentage of Barium in the compound?
Wednesday, March 17, 2010 at 5:30pm

college microeconomics
An article in the journal of New York State Economics Association claims that the income elasticity of demand for public college education in New York is +1.67. Who would find this information useful and why? come up with 3 interested parties
Wednesday, March 17, 2010 at 3:28pm

college
Solve the inequality using a sign graph (test point method) x^3-x^2-4x+4<0
Wednesday, March 17, 2010 at 3:16pm

college calculus 1
Find the local and absolute extreme values of the function on the given interval. f(x)=x^3-6x^2+9x+1, [2,4]?
Wednesday, March 17, 2010 at 5:22am

College Chemistry Lab
For the following mixture, determine the initial concentration of Fe^3+. 0.00250M Fe^3+ --- 8.00mL 0.00250M SCN^- --- 7.50mL 0.10M HNO3 --- 4.50mL
Tuesday, March 16, 2010 at 7:59pm

College Chemistry Lab
Determine the molarity of FD&C Yellow #5 in the following solution that's prepared by mixing the dye solution with water and alcohol. None of the solutes react with one another. 6.35x10^-5M FD&C Yellow #5 = 6.50mL deionized water = 6.50mL ethyl alcohol = 6.80mL
Tuesday, March 16, 2010 at 7:32pm

College Chemistry Lab
Suppose that a 2.50x10^-6M solution of red dye No. 2 had an absorbance of 0.585 at its wavelength of maximum absorbance. A second solution of red dye No. 2 is too concentrated to read its absorbance so 5.00 mL of the concentrated dye solution was diluted with water to a volume...
Tuesday, March 16, 2010 at 7:29pm

College Physics
You are holding a shopping basket at the grocery store with two 0.69-kg cartons of cereal at the left end of the basket. The basket is 0.90 m long. Where should you place a 1.8-kg half gallon of milk, relative to the left end of the basket, so that the center of mass of your ...
Tuesday, March 16, 2010 at 4:01pm

College Physics
Two 72.0-kg hockey players skating at 7.00 m/s collide and stick together. If the angle between their initial directions was 130 degrees , what is their speed after the collision?
Tuesday, March 16, 2010 at 4:00pm

College Physics
During a rescue operation, a 5600-kg helicopter hovers above a fixed point. The helicopter blades send air downward with a speed of 69 m/s. What mass of air must pass through the blades every second to produce enough thrust for the helicopter to hover?
Tuesday, March 16, 2010 at 3:59pm

college
Explain the relationship between program planning and grant proposals. When describing each component, address their similarities and differences as well as how they relate to each other.
Tuesday, March 16, 2010 at 11:28am

college
Smokey the Bear celebrated his 65th birthday this year. Why has the message of the forest service that “only you can prevent forest fires” changed in recent years to allow more fires?
Tuesday, March 16, 2010 at 9:55am

College Chemistry Lab
The absorbance of a 9.25x10^-8M solution of a fabric dye was measured to be 0.835 at a particular wavelength. What would the absorbance be for a 4.65x10^-8M solution of the same dye under identical conditions?
Monday, March 15, 2010 at 11:56pm

College Chemistry Lab
The absorbance of a 6.3x10^-5M solution of an iron complex was measured to be 0.328 at the optimum wavelength. A second solution of the iron complex has an absorbance of 0.833 measured under identical conditions. What is the molarity of the complex in the SECOND SOLUTION?
Monday, March 15, 2010 at 11:54pm

College CHem
Suppose you accidently add too much NaOH during a titration. You then add a volume of HCl exactly equal to ½ the volume of NaOH actually used in the titration. What effect does this have on the Ka?
Monday, March 15, 2010 at 6:43pm

College Math
Find the exact value of: sin [2sin^-1 (-sq rt (3)/2)] how do i answer this question? i don't know how to find the answer.
Monday, March 15, 2010 at 1:09pm

college math
find the range of the function defined by the equation and the given domain. f(x)=3/x-6; D={-3,0,3,9}
Monday, March 15, 2010 at 12:40pm

college
what values are excluded from the domain of the function f(x)= x-5/x?
Monday, March 15, 2010 at 12:23pm

College Physics
A 3400 kg open railroad car coasts along with a constant speed of 7.50 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 5.10 kg/min.Ignoring friction with the tracks, what is the speed of the car after 85.0 min ?
Sunday, March 14, 2010 at 11:04pm

college Psychology
I am having trouble describing the interaction (How does effect of one Independent variable depend on level of other independent variable and why?) My 1st independent variable is Type of Stimulus: with 2 levels pictures and words. My 2nd independent variable is Type of Content...
Sunday, March 14, 2010 at 10:02pm

college physics
A 12100 kg railroad car travels alone on a level frictionless track with a constant speed of 20.5 m/s. A 5850 kg load, initially at rest, is dropped onto the car. What will be the car's new speed? Please help!
Sunday, March 14, 2010 at 2:34pm

college physics
From what maximum height can a 61 kg person jump without breaking the lower leg bone of either leg? Ignore air resistance and assume the CM of the person moves a distance of 0.65 m from the standing to the seated position (that is, in breaking the fall). Assume the breaking ...
Sunday, March 14, 2010 at 11:48am

college physics
You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 50 km/h (31 mph). A new model of mass 1400 kg takes 0.18 s from the time of impact until it is brought to rest. Calculate the...
Sunday, March 14, 2010 at 11:44am

college
The diameter of a wire should be 8 cm. It follows a normal distribution and has a standard deviation of 0.01 cm. A person tests each delivery by taking 5 samples, accepting the goods only if the mean is at most 8.01 a) Find the probability of type 1 error? b) A hypothesis test...
Sunday, March 14, 2010 at 9:31am

College Physics
If you slam your finger in a car door how can you thank Coulomb's Law for the fact your finger wasn't chopped off? I don't understand.
Sunday, March 14, 2010 at 1:29am

Using the factor Theorem
use the factor theorem to determine whether x-c is a factor of f(x) f(x)=x^3+8x^2-18x+20; x-10 I have a doubt in my answer, i determined that x-10 is not a factor... am i right? please verify as my exam is tomorrow night at college. thank you for your time and hard work:)
Saturday, March 13, 2010 at 7:36pm

college
Explain why, in terms of job performance and efficiency, knowing medical billing terms is critical for working in the health care field. Respond in at least 150 words and provide specific examples.
Saturday, March 13, 2010 at 1:47am

college chemistry - answer check ASAP!
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressures of oxygen: 0.20 atm of oxygen at one point and 0.0010 atm of oxygen at the other. The ...
Saturday, March 13, 2010 at 1:01am

Chemistry II (College)
How would I go about solving this problem? Can someone show me an equation that can be used? The decomposition of dimethyl ether at 504°C is a first-order reaction with a half-life of 27 min. (CH3)2O(g) CH4(g) + H2(g) + CO(g) What will be the total gas pressure after 2.18 ...
Friday, March 12, 2010 at 3:40pm

College Chemistry
a solution contains .25M Ni(NO3)2 and .25 M Cu(NO3)2. Can the metal ions be separated by slowly adding Na2CO3?Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and assume no vlume change on ...
Friday, March 12, 2010 at 1:47am

Pages: <<Prev | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | Next>>

Post a New Question | Current Questions

Homework Help

For Further Reading