100.000g of water at 80.0oC was mixed with an equal amount of cool water (T = 20.0oC) in a calorimeter. The final temperature of the water in the calorimeter is 50.0oC. What is the heat (q) in kilojoules for the cold water?

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Why is nh3 classified as a polar molecule