What do you call a substance that undergoes a change in a chemical reaction

21 g each of Li (molar mass = 7 g/mol) and N2 (molar mass = 28 g/mol) are placed in a reaction vessel. What is the maximum mass of Li3N (molar mass = 35) that can be produced?

Describe the effect of water temperature on the amount of dissolved gases in water.

Calculate the ph of a 0.10 m solution of hypochlorous acid, hocl. ka of hocl is 3.5Ã10â8 at 25 âc. express your answer numerically using two decimal places.

How much heat would be required to warm the Earth's ocean by 1 degrees Celsius?

What are the two functions of all enzymes

Which statement best explains the plateau seen in the cooling curve of naphthalene? A) The energy of the system decreases B) The temperature of the system increases C) the temperature of the system decreases D) The energy of the system remains

A group of organisms that breed and produce offspring that can breed. A. Species B. ecosystem C. Biodiversity

The surface of the earth is divided into more than 50 large plates

What is the net ionic equation for AgNO3 (aq) + K2SO3 (aq) ?

Oil and water a combined to make salad dressing. Physical Change? Chemical Change? Both?