Sunday
April 20, 2014

Homework Help: College

Post a New Question | Current Questions

College Chemistry
When Aluminium is added to KOH then solution is?
Thursday, May 9, 2013 at 1:10pm

scholarship essay
What makes me deserving of this scholarship is my dedication to succeed, my work ethic, and leadership skills. Throughout my years in school I have always been recognized as a person that loves to be the best. People all over the world have dreams that never come true. One ...
Thursday, May 9, 2013 at 10:23am

Math
2500 students take a college entrance exam. The scores on the exam have an approximate normal distribution with mean u = 52 points and a standard deviation o = 11 points. Estimate the percentage of students scoring 52 points or more. ^ How would you do this?
Tuesday, May 7, 2013 at 11:25pm

College Chemistry 104
A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration of Cu+2 has fallen to ...
Tuesday, May 7, 2013 at 11:50am

embryology
...Actually I strongly recommend that you go to the nearest college, go to its bookstore, and find the used textbook area. Many times you will find great books for under 5 dollars.
Monday, May 6, 2013 at 4:10pm

ENGLISH
5. Which one of the following sentences contains an unnecessary colon? A. Here's the question on all of our minds: Will our team be able to defeat their arch rivals tonight? B. My store list included: milk, soup, chicken, and ice cream. C. She wants one thing: a new job. ...
Monday, May 6, 2013 at 12:34pm

college physics
a water skier is being pulled by a tow rope attached to a boat. as the driver pushes the throttle forward,the skier accelerates. a 70.3kg water skier has an initial speed of 6.10m\s. determine the work done by the net external force acting on the skier.
Monday, May 6, 2013 at 11:21am

college algebra
i need help with elimination and substitution linear equation
Sunday, May 5, 2013 at 11:04pm

Math- Statistics
Suppose 60% of adults have a college degree. If I take a random sample of 80 adults, what is the probability at least 50% of them have a college degree?
Sunday, May 5, 2013 at 10:57pm

College Chemistry
I assume you are looking to predict the solution of the salt. yes Bob
Sunday, May 5, 2013 at 12:07pm

College Chemistry
Yes
Sunday, May 5, 2013 at 12:01pm

college Chemistry
oxygen nitrogen carbon dioxide
Sunday, May 5, 2013 at 11:56am

college Chemistry
What would you expect to be the chemical names of the main gases that were dissolved in the tap water?
Sunday, May 5, 2013 at 11:54am

college Chemistry
if conductivity increases, brightness increases.
Sunday, May 5, 2013 at 11:43am

college Chemistry
Conductivity test, what controls the brightness of the light? (hint: think about your tapwater abd NaCl results and why they were different)
Sunday, May 5, 2013 at 11:37am

College Chemistry
I assume you are looking to predict the solution of the salt. Very few ionic crystals are good conductors unless dissolved.
Sunday, May 5, 2013 at 11:07am

College Chemistry
What is its dissociation constant?
Sunday, May 5, 2013 at 11:01am

College Chemistry
What must we know a given ionic salt to be able to predict whether is is a good or poor conductor, w/o testing its conductivity?
Sunday, May 5, 2013 at 10:32am

college agebra
(3x^2 - 2x - 1)(x^2 + x + 5) = 3x^4 + 3x^3 + 15x^2 + -2x^3 - 2x^2 ..... etc (you should have 9 terms in this line) can you see what I am doing? it is just an expanded version of the old FOIL concept I am sure you can finish it There will be all kinds of like terms, make sure ...
Friday, May 3, 2013 at 10:20pm

college agebra
(3xsquared-2x-1)(xsquared+x+5)
Friday, May 3, 2013 at 9:08pm

college algebra
Solve: x^3-9x^2+20x-20<0 write answer in the interval form.
Friday, May 3, 2013 at 6:49pm

Statistics
1. A study of 40 people found that they could do on the average15 pull ups with a standard deviation of .6. Find the 99% confidence interval for the mean of the population. 2. A study of 50 pizza delivery workers found that they could make 6 deliveries per hour with a standard...
Friday, May 3, 2013 at 11:45am

statistics
A sample survey interviews an SRS of 263 college women. Suppose (as is roughly true) that 75% of all college women have been on a diet within the past 12 months. Using the Normal approximation, what is the probability (±0.001) that 82% or more of the women in the sample...
Thursday, May 2, 2013 at 10:48pm

Statistics
Assuming that the heights of college women are normally distributed with mean 66 inches and standard deviation 2 inches, what percentage of women are shorter than 72 inches?
Thursday, May 2, 2013 at 5:39pm

college chemistry
what is the correct answer for this?
Thursday, May 2, 2013 at 1:27am

college algebra
I can't log into your photobucket, (needs password) so I will "guess" at a diagram expanding and simplifying your equation I got y = (-1/625)x^ + 400 b) at the centre, x = 0 so y = 400 the bridge is 400 ft high width of bridge, let y = 0 (on the x-axis) 0 = (-1/...
Wednesday, May 1, 2013 at 9:26pm

college algebra
I have been stuck on this problem for over a week and I don't even know how to start the problem. Parabola equation y= 4(100 - x^2/2500) x and y are measured in feet A. Find the length of the road across the bridge B. find the height of the parabolic arch at the center of ...
Wednesday, May 1, 2013 at 9:07pm

Lincoln College Of New En
It has been found that 85.6% of all enrolled college and university students in tge united states are undergrates. A random sample of 500 enrolled college students in a paticular state revealed that 420 of them were undergrates. Is there sufficient evidence.to conclude that ...
Wednesday, May 1, 2013 at 2:53pm

math
Assume you do not know the population standard deviation. describe how you form a 90% confidence interval to estimate the population mean age for students at Westwood College Online.
Wednesday, May 1, 2013 at 10:01am

College chemistry
You're making this much harder than it is. Don't be intimidated by chemistry. The difference is 7.4-6.4 = 1.0, right? To convert pH to H3O^+, use pH = -log(H3O^+) 7.4 = -log(H3O^+) and 6.4 = -log(H3O^+). Solve each for H3O^+ and subtract these two numbers to find how ...
Tuesday, April 30, 2013 at 4:05pm

College chemistry
The pH of blood is 7.4 and that of saliva is 6.4. what is the difference in pH between these two solutions? How much more Hydronium ion (H3O+) is in the saliva than in the blood. I need a detailed answer with the formulas if you can. I have a hard time with chemestry
Tuesday, April 30, 2013 at 3:38pm

College Physics
1.4 m/s
Tuesday, April 30, 2013 at 12:35pm

Math
A national study reports that 20% of college freshman have GPA above 3.5. We wish to determine if the corresponding proportion is higher at a local university. To conduct the test we select a random sample of 100 freshmen and determine that 26 of them have GPA above 3.5. Run ...
Tuesday, April 30, 2013 at 11:39am

College Algebra and Number Theory
SETS Let S1, ... , Sn be sets satisfying the following condition: Sj ¡ö Sj+1 for all 1 ¡Â i ¡Â n - 1. Find S1 ¡û S2 ¡û¡¦ ¡ûSn and S1 ¡ú S2 ¡ú ¡¦ ¡&...
Sunday, April 28, 2013 at 7:51pm

Engineering
A physics major is working to pay his college tuition by performing in a traveling carnival. He rides a motorcycle inside a hollow transparent plastic sphere. After gaining sufficient speed, he travels in a vertical circle with a radius of 13.4 . The physics major has a mass ...
Sunday, April 28, 2013 at 11:16am

College Physics
A uniform meter stick of mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance at a point 19.9 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale, the reading on the ...
Saturday, April 27, 2013 at 10:55pm

Physics
just keep thinking you can figure it out it is a college course so i cant help you.
Saturday, April 27, 2013 at 9:53pm

Physics
just keep thinking you can figure it out it is a college course so i cant help you.
Saturday, April 27, 2013 at 9:52pm

randhills college life orientation
I need help its been a week but why cant u help me?
Saturday, April 27, 2013 at 7:11am

english
Questions about Avi(the author) Why was school a constant struggle for him? Avi kept writing because of the encouragement of his family and the help of whom? After college, what job did Avi take? where? When did Avi become interested in children's literature?
Friday, April 26, 2013 at 8:25pm

Lincoln College Of New En
If you really want an expert to help you, be sure to follow directions and type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.
Friday, April 26, 2013 at 6:07pm

college pathology 2
igk
Friday, April 26, 2013 at 2:47pm

Lincoln College Of New En
A survey by Men’s Health magazine stated that 14% of men said they used exercise to reduce stress. Use a = 0.10. a random sample of 100 men was selected and 10 said that they used exercise to relieve stress. Use the P –value method to test the claim. Could the ...
Friday, April 26, 2013 at 2:05pm

Lincoln College Of New En
it has been found that 85.6% of all enrolled college and university students in the U.S. are undergraduates. A random sample of 500 enrolled college students in a particular state revealed that 420 of them were undergraduates. Is there sufficient evidence to conclude that the ...
Friday, April 26, 2013 at 1:43pm

Lincoln College Of New En
The percentage of physicians who are women is 27.9% in a survey of physicians employed by a large university health system, 45 of 120 randomly selected physicians were women. Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of ...
Friday, April 26, 2013 at 1:29pm

Lincoln College Of New En
the Old Farmer’s Almanac stated that the average consumption of water per person per day was 123 gallons. To test the hypothesis that this figure may no longer be true, a researcher randomly selected 16 people and found that they used on average 119 gallons per day and s...
Friday, April 26, 2013 at 1:22pm

Lincoln College Of New En
the average 1-ounce chocolate chip cookie contains 110 calories. A random sample of 15 different brands of 1-ounce chocolate chip cookies results in the following calorie amounts, at the a = 0.01 level, is there sufficient evidence that the average calories contents is greater...
Friday, April 26, 2013 at 1:15pm

college Mathematics
Thank you Steve
Friday, April 26, 2013 at 11:46am

college Mathematics
no, you are correct.
Friday, April 26, 2013 at 11:45am

college Mathematics
I am having problems with permutations what is 5P2 The answer I have is 20 am I wrong?
Friday, April 26, 2013 at 11:44am

College math
C(50,6) = 15,890,700
Friday, April 26, 2013 at 10:41am

College math
Please HELP! In a certain lottery game players choose a set of 6 distinct numbers from the numbers 1-50. How many combinations are possible if order is not important. Thanks sooooo much!
Friday, April 26, 2013 at 8:53am

College Physics
A speck of charged dust with a mass of 39mu g. is kept levitating by putting it in an electric field. If you must apply a field of 10 N/C to keep it suspended in mid-air, what is the charge on the speck of dust? Can someone please help soon? I got this wrong on my last test ...
Thursday, April 25, 2013 at 9:55pm

English
Now that we have gathered a vast amount of ____ it is up to us to draw some useful conclusions from all this information data 6.After the war, all the property that has been ____ by the government was turned back to its former owners confiscate 7.Little did I realize when I ...
Thursday, April 25, 2013 at 6:02pm

College Physics
The rectangular coils in a 201-turn generator are 14 cm by 17 cm. What is the maximum emf produced by this generator when it rotates with an angular speed of 525 rpm in a magnetic field of 0.81 T? I'm not sure what equations to use.
Thursday, April 25, 2013 at 4:39pm

college chemistry
fk
Thursday, April 25, 2013 at 4:09pm

College math
Three coins are tossed. How many ways are there to get more than 2 tails, exactly 2 heads, only 1 tail. Thanks in advance for the help!
Thursday, April 25, 2013 at 12:34pm

pharmacy informatics
Yes, it looks as if you'd have to buy that one if you want to read it. Another suggestion I have is to go to your local or college library and search on their big databases. In the college where I taught, once a student or teacher had a library card, he/she could access ...
Thursday, April 25, 2013 at 10:02am

college physics
Power = 7.0hp * 746W/hp = 5222 Watts = 5222 Joules/s. Mass = 475Lbs * 0.454kg/Lb = 215.65 kg.= Mass of boiler. d = 38Ft./3.3Ft/m = 11.52 m. Work=F*d = mg * d=215.65*9.8 *11.52= 24,346 Joules. t = 24346J * 1s/5222J = 4.66 s.
Wednesday, April 24, 2013 at 8:40pm

statistics
0.57 of all college students like the idea of a new curriculum. If we select 88 students (ASSUME INDEPENDENCE), what is the Standard Deviation of (the Probability Distribution that would list the number of students (from 0 to 88) and the probability of each.) THE STANDARD ...
Wednesday, April 24, 2013 at 8:37pm

college algebra
logx + log 2x = 4 log (x(2x)) = 4 , using the rule log AB = logA + logB log (2x^2) = 4 so 2x^2 = 10^4 2x^2 = 10000 x^2= 5000 x = ± √ 5000 but x > 0 for log x to be defined so x = √5000
Wednesday, April 24, 2013 at 6:09pm

college algebra
Solve the logarithmic equation. Log x +log2x = 4 Wouldn't this be no solution because log x is undefined?
Wednesday, April 24, 2013 at 3:49pm

statistics
Suppose that the test scores for a college entrance exam are normally distributed with a mean of 450 and a standard deviation of 100. If a student is selected at random what is the probability that the student will score above 600?
Wednesday, April 24, 2013 at 11:36am

College algebra
4x (5x-3)
Wednesday, April 24, 2013 at 9:34am

College algebra
20x^2+12x
Wednesday, April 24, 2013 at 9:02am

Statistics
Based on information from Harper's Index, 37 out of a random sample of 100 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of 100 Americans who did attend college, 41 claim that they believe in extraterrestrials. At ...
Tuesday, April 23, 2013 at 5:23pm

Statistics
Assuming that the heights of college women are normally distributed with mean 62 inches and standard deviation 3.5 inches, what percentage of women are between 58.5 inches and 72.5 inches? a. 13.6% b. 84.0% c. 97.6% d. 34.1% e. 15.7%
Tuesday, April 23, 2013 at 3:26pm

Business Math
A Competitive Coup in the In-Flight Magazine. When the manager for market intelligence of AutoCorp, a major automotive manufacturer, boarded the plane in Chicago, her mind was on shrinking market share and late product announcements. As she settled back to enjoy the remains of...
Tuesday, April 23, 2013 at 9:56am

PLEASE HELP! college algebra
the magnitude of dot and products of two vectors are 6 ander root 3 and 6 respectivly9.find the angle between the vectors.
Tuesday, April 23, 2013 at 7:41am

College algebra
e^(x+5) = e^-6 x+5 = -6 x = -11
Tuesday, April 23, 2013 at 4:31am

College algebra
Solve equation by expressing each side as a power of the same base & then equating exponents. e^x+5=1/e^6
Tuesday, April 23, 2013 at 3:24am

Chemistry 110, college
mols ethylene glycol = grms/molar mass = ?. Solve for mols. m ethylene glycol = mols/kg solvent Solve for m and substitute into the two equations below. dT = Kf*m and dT = Kb*m
Monday, April 22, 2013 at 10:04pm

College Chem
Looks more like Boyle's law to me. P1V1 = P2V2
Monday, April 22, 2013 at 9:56pm

Basic college Math
5
Monday, April 22, 2013 at 5:35pm

College Chem
charles law: 7.89 l sample of gas had pressure of 850 torr. what volume will it occupy if the pressure is changed to 457 torr? (torr is a measurement of pressure. 760 torr = 1 atmosphere
Monday, April 22, 2013 at 4:55pm

College: Diversity Education
The question clearly asks about "cultural influences" -- which of the answers addresses these?
Monday, April 22, 2013 at 2:47pm

College: Diversity Education
Still didn't actually help me with the question.
Monday, April 22, 2013 at 2:35pm

College: Diversity Education
http://www.jiskha.com/display.cgi?id=136​6653276
Monday, April 22, 2013 at 2:31pm

College: Diversity Education
A term referring to perspectives on children’s development that emphasize the importance of cultural influences is A) cultural constructivism. B) ethnoconstructivism. C) social constructivism. D) anthropological constructivism. I believe the answer is C, but wanted a ...
Monday, April 22, 2013 at 2:24pm

Chemistry 110, college
A solution is prepared by dissolving 56.5g of ethylene glycol in 874 g of water. Calculate the change in the boiling point and the freezing point.
Monday, April 22, 2013 at 2:05pm

english
(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces and ...
Monday, April 22, 2013 at 1:30pm

college physics
how long would it take a 4.50kW MOTOR TO RAISE A 175KG BOILER TO A PLATFORM 15.0M ABOVE THE FLOOR?
Monday, April 22, 2013 at 8:19am

college physics
How many seconds would it take a 7.00hp motor to raise a 475 lb boiler to a platform 38.0 ft high?
Monday, April 22, 2013 at 8:18am

college
Ooooops! x^2 + (x + 6)^2 = 27^2 Don't know where I got x+ 2. Sorry.
Sunday, April 21, 2013 at 9:47pm

college
let x = distance from pole to spot on ground where guy wire is attached x + 6 = height of pole x^2 + ( x+ 2 )^2 = 27^2 simplify and solve for x
Sunday, April 21, 2013 at 9:18pm

college
a guy wire 27 feet long runs from the top of the pole to a spot on the ground. I f the height of the pole is 6 feet longer than the from the base of the pole to the spot where the guy wire is anchored, how tall is the pole?
Sunday, April 21, 2013 at 9:13pm

College Chem 1010
NH4OH
Sunday, April 21, 2013 at 4:14pm

College Algebra
1324413345
Sunday, April 21, 2013 at 10:24am

College Algebra
1324413345
Sunday, April 21, 2013 at 10:23am

College Physics
A uniform ladder of mass, m, and length, l, leans at an angle, theta, against a frictionless wall. Determine a formula for the minimum angle at which the ladder will not slip.
Saturday, April 20, 2013 at 12:03am

College Physics
A large 61.0 kg board is propped at a 45 degree angle against the edge of a barn door 2.9m wide. How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board but that...
Saturday, April 20, 2013 at 12:02am

College Physics
A cubic crate of side s=2.0m is top-heavy: its CG is 18cm above its true center. Part A) How steep an incline can the crate rest on without tipping over? Part B) What would your answer be if the crate were to slide at constant speed down the plane without tipping over? (The ...
Saturday, April 20, 2013 at 12:01am

PLEASE HELP! college algebra
Given the following piecewise function f(x)= {-x+1 for x < 0 {-1 for 0 ≤ x ≤ 3 {-2x for x > 3 a) Find the domain b) Find the range c) Find the intercepts d) Is f continuous on its domain? If not, state where f is discontinuous. e) Graph the function
Friday, April 19, 2013 at 8:42pm

college algebra
what's the problem? The roots give the factors: 1. (1)(x+1)(x-2)(x-5) 2. (-1)(x+4)(x-3)(x-3)(x-4)
Friday, April 19, 2013 at 2:46pm

college algebra
1.write the formula for the function that has degree 3 and zeros of -1,2 and 5 with a lead coefficient of 1? (leave answer in factored form) f(x)= 2. Write the formula for the function that has degree of 4 and zeros of -4, 3(multiplicity 2) and 4 with a lead coefficient of -1...
Friday, April 19, 2013 at 2:24pm

Chemistry College
How much KHP is in samples 2 and 3? %KHP = (mL x M x mmolar mass/mass sample) You know mL NaOH, M NaOH, millimolar mass KHP is 0.20422; solve for %KHP. Then substitute %KHP and new mass of samples 2 and 3 and solve for mL NaOH.
Thursday, April 18, 2013 at 2:25pm

Chemistry College
If KHP sample 1 requires 22.47 mL of aqueous NaOH, how many milliliters of NaOH should be needed for samples 2 and 3?
Thursday, April 18, 2013 at 3:59am

College Chemistry
When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?
Thursday, April 18, 2013 at 2:16am

College Chemistry
When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?
Thursday, April 18, 2013 at 2:16am

College Chemistry
When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?
Thursday, April 18, 2013 at 2:16am

Pages: <<Prev | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | Next>>

Post a New Question | Current Questions

Search
Members