If hydrogen gas and oxygen react with enough of heat they produce steam. a. Write the equation and balance if needed. b. If you have 250 g of steam, how many grams of hydrogen and oxygen were needed to react to produce this amount of steam?

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.

What is the number of neutrons in an atom with atomic mass of 35

The polarity of an oxygen-hydrogen bond is higher than the polarity of a nitrogen-hydrogen bond, allowing amines to be more soluble than alcohols.