PLEASE HELP!! 25 grams of methane is placed inside a constant volume calorimeter. After the fuel is burned, the temperature rises by 4.5 deg C. If the heat capacity of the calorimeter is 5.75 kj/deg C what is the heat released?

Easy definition for atom and atomic mass

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.