How much heat was transferred from the block to the water?

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.

Which of the following is a chemical property of water at 4 c