Recent content by bjoyful

Yes, I have, but it was earlier this semester...

I have been working on this assignment for several days, but I am not sure I am doing it 100% right. Any help will be appreciated! 1. Homework Statement : 1. For the NEW bottle of hydrogen peroxide, record and calculate the following: (a) Volume of potassium permanganate used in...

Thanks everyone you giving me input on this...

1. Homework Statement [/b] The overall question is: For this assignment explain how the E=mc2 equation applies to nuclear fission. In your answer illustrate your explanation with an example, being sure to distinguish between mass and mass number, and explain how a nuclear equation differs...

I am writting a short essay with the following questions: Explain how E=mc2 equation applies to nuclear fission. I am to illustrate my explanation with an example, being sure to distinguish between mass and mass number, and explain how a nuclear equation differs from a chemical equation. I...

I am trying to come up with an example to illustrate how E=mc2 applies to nuclear fission. I need to be sure to distinguish between mass and mass number. I feel like I have some thing on the brink of my mind and then I loose it. I guess I need some help as I am tired and don’t know how much...

Is 42.8kg the correct number of NO? Is there a formula to use to find how much of this is N?

Homework Statement Assume that coal can be represented by the formula C135H96O9NS. A. What is the percent of nitrogen by mass in this coal? B. If three tons of coal were burned completely, what mass of nitrogen in NO would be produced? (Assume that all of the nitrogen in the coal is...

Sorry that I did not write my 17.5 in a complete sentance! Yes, I did mean 17.5 gallons of bottled water consumed per capita in 1992.

.. CO2 = :O::C::O: .. H2O = H::O::H So I compared them this way, but am I using the right method for this problem? I know that H2O is a polar covalent bonds forming a polar covalent molecule. But carbon is my center in CO2, not oxygen as it is in H2O. Help:( edit: my...

And doesn't it have something to do with water expanding?

Because the density of water is greater than ice?

Homework Statement Calculate the quantity of heat absorbed (+) or released (-) during each of these changes: A. 250g. of water (about 1 cup)is heated from 15 degrees centigrade to 100 degrees; B. 500g. of water is cooled from 95 degrees centigrade to 55 degrees; C. 5.0ml. of water at 4...

thanks...

Wow, I am amazed at the number of posts you have done:) I think that is the most I have seen! Ok, on to my problem...Thanks for explaining this problem in depth. I had wondered if the 10 years ago was from the 2002 or not, so thanks for pointing which one is was out. To figure out what the per...