What is the role of an enzyme? a. speeds up biochemical reactions b. causes biochemical reactions c. is a product in biochemical reactions d. provides extra heat for biochemical reactions

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

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.