Min

Most popular questions and responses by Min
1. Math

What is the volume of the solid figure

2. chemistry

A student measures the conductivity of a KNO3 solution and determines it to be a strong electrolyte. the student incorrectly lists the species in solution as KNO3,K+, NO3. Give the correct list of species in solution? Please help I am lost

3. Chloral Hydrate

What is the molar mass of chloral hydrate and how many moles of C2H3Cl3O2 molecules are in 500 g chloral hydrate. Also, what is the mass in grams of 2.0 x 10^-2 mol chloral hydrate? Molar mass? You can add them up. Starting at the left, 2 carbons, three H,

4. Chem

How many chlorine atoms are in 5.0 g of C2H3Cl3O2? What mass of C2H3Cl3O2 would contain 1.0g Cl? There are 6.02 x 10^23 atoms in a mole of anything. Calculate the molar mass of your compound, that mass will contain 6.02 x 10^23 molecules of that material

5. Physics

A bullet is fired horizontally from the roof of a building 100 meters tall with a speed of 850 m/s. Neglecting air resistance, how far will the bullet drop in 3 seconds? 1 29.4 m 2 44.1 m 3 100 m 4 2550 m Answer should be choice 2) 44.1m BUT I DON'T GET

6. Pre- Cal

How long, to the nearest year, will it take me to become a millionaire if I invest \$1000 at 10% interest compounded continuously? I got 70 years, but it is wrong. I used the P (1+ (r/m))^mt Thank you.

7. Physics

A 90N dog climbs up a non-uniform (lambda = Cx^(3/2)), 100N ladder. The top of the ladder rests on the top of a frictionless fence that is 3m high and forms a 30 degree angle with the ground, which is rough and has a coefficient of friction of 0.60. How

8. algebra- integer problems

Hi! i have this problem, I'm stuck on. it says find 2 consecutive multiples of 9 whose sum is -153. I started of my saying the 1st number is 9x and the 2nd is 9x+9. I continued on to get, 9x+(9x+9)=-153 and solved it. I got an irrelevant answer: -9. I was

10. Chemistry

Lithium has 2 isotopes. The relative atomic masses are 6.02 and 7.02. The average relative atomic mass of lithium is 6.94. What is the calculated relative abundance of the lighter isotope?

11. Energy

174520 = (massboiled) (2260) .1716 = massboiled so .1716? Suppose a burner transfers 325 kJ of energy to 450 kg of liquid water at 20 C degrees. What mass of the water would be boiled away? The first energy going in heats the water: energy=mass*c*(100-20)

12. physics

A NON-UNIFORM board of length L and mass M has a center of mass at 5/6L. If the fulcrum is placed at the center of the board and a block of mass m is placed at the right of the board, then where must a block of mass 3m be placed to balance the board? I

13. math

Suppose that f(t)is a function for which f(80)=8.7and f'(80)=-2.2. Use this information to estimate the following. Round your answer to one decimal place. f(80-1)

14. Physic

A car starts from rest on a curve with a radius of 160 and accelerates at 1.40 . How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.70 ?

15. Physic

A car starts from rest on a curve with a radius of 160 and accelerates at 1.40 . How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.70 ?

16. math

A cake calls for 1/4 lb of butter. How much butter is needed to make 15 such cakes?

17. chemistry

I need the pre lab anwsers to 22, I have been studying for a test and have not finished them

18. Algebra

How would you prove this theorem: The column space of an m x n matrix A is a subspace of R^m by using this definition: A subspace of a vector space V is a subset H of V that has three properties: a) the zero vector of V is in H. b) H is closed under vector

19. English

what is a great hook starter for a rollercoaster essay?

20. History US

What was Hamilton's economic plan..? why didn't people like it?

21. debate

1. In your experience, is Christmas “taboo” in public schools? How is Christmas treated at your school? Do you think your school has gone too far to be politically correct during the holidays? 2. Do you think there really is a “war on Christmas?”

1. math

posted on January 8, 2019
2. English

I already wrote the rest i am just revising

posted on October 15, 2018
3. phy

5600

posted on September 3, 2017
4. physics

0,34s

posted on March 24, 2015
5. chemistry

will you please list a exsample

posted on November 30, 2012
6. Physics

Yes, it does have to do with the weight distribution. I'm confident with the 4.29 so up to here is all I need. Thank you for your help!

posted on November 27, 2012
7. Physics

So for the equation for the total, would this be correct? (100)(4.29)cos30 - (90)(x)cos30 + (114)(6)sin30 = 0

posted on November 27, 2012
8. physics

Gotcha, thank you!

posted on November 15, 2012
9. math

Your brother traveled 117 miles in 2.25 hours to come home for christmas. What' the average speed that he was traveling?

posted on December 16, 2010
10. math correct or not correct

10 1/2 - 8 5/8 = 21/2 - 69/8 Take L.C.M = 8 84 - 69 /8 = 15/8 = 1 7/8 or 1.8

posted on October 20, 2010
11. grammar

E. no one's surprise is the correct one

posted on October 20, 2010
12. science

In an experiment a variable can change.

posted on October 20, 2010
13. science

Food, shelter, water and air

posted on October 20, 2010
14. number patterns

1st day = 4 2nd day = 8( double of 4) 3rd day = 16 ( double of 8)

posted on October 20, 2010
15. English grammar

It is a relative adverb. .Whether a "wh-word" functions as a relative pronoun or a relative adverb is determined by its function in the subordinated relative clause.

posted on October 20, 2010
16. History US

like what are the pros and cons?

posted on December 3, 2008
17. algebra- integer problems

whoops... hehe sorry. I forgot about the "pluging in" :D thanks for the help

posted on November 14, 2007