# deanne

Popular questions and responses by deanne
1. ## Chemistry

A 54.7-g sample of aluminum at 95.0°C is dropped into 35.0 g of water at 40.0°C. What is the final temperature of the mixture? (specific heat capacity of aluminum = 0.89 J/g°C; specific heat capacity of water = 4.184 J/g°C)

2. ## chemistry

Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of

3. ## Algebra

Power Standard Form 10^1 10 10^2 100 10^3 1000 10^4 10000 10^5 100000 Explain how the number of zeros in the standard form of a power of 10 relates to the exponent. Write a rule for the number pattern as well.

4. ## Organic Chemisty

How to identify the difference between major and minor products using Markovnikov' rule

5. ## Physics

A total of 0.800 kg of water at 20 degrees celsius is places in a 1kw electric kettle. How long a time is needed to raise the temperture of water to 100 degrees celsius?

Power Standard Form 10^1 10 10^2 100 10^3 1000 10^4 10000 10^5 100000 Write a rule for the number pattern.

7. ## Physics

Boxcar A, with a mass of 1500 kg, is travelling at 25 m/s to the east. Boxcar B has a mass of 2000 kg, and is initially at rest. The boxcars collide inelastically and move together after they get stuck. What is their combined velocity?

8. ## algebra1/McDougal Littell

I need to know how to work this problem and show my work: 1/5x-3x+2=2/5x + 18 First rather the x so: 1/5x-3x+2=2/5x+18 1/5x-3x-2/5x=18-2 -3.2x=16 -x=5 x=-5 I don't know if this is correct. Please cheak over it. i don't unstand math. how can i?

Power Standard Form 10^1 10 10^2 100 10^3 1000 10^4 10000 10^5 100000 Write a rule for the number pattern.

10. ## Algebra-Can you please check this Reiny

Can you check this: x^-3y^2/x^2y^-4 I think the answer is y^6/x^5 Thanks for explaining the other problem

11. ## World History to 1500

My history professor has asked that we present 3 possible research paper topics to her based on mythology or a belief system that may influence present time. I am having trouble with this. I have lots of ideas. .reincarnation, karma, paganism..even

12. ## Algebra

We just started this topic and I'm confused about these exponents. Simplify [ 11d^2e^5/33d^4e^2]^2 Could you explain the steps Thanks