9. In a sample of gas, what causes pressure? Answer in a completesentence.

When a liquid becomes a gas, the process is called?

There are two steps in the extraction of copper metal from chalcocite, a copper ore. in the first step, copper (i) sulfide and oxygen react to form copper (i) oxide and sulfur dioxide: (s) (g) (s) (g) in the second step, copper (i) oxide and carbon

The water molar heat of vaporization is 40.70 kilojoules per mole. At 100 degrees, 57.30 grams of water exist as a gas. How many kilojoules per mole must be removed to turn the water into a liquid at 100 degrees celsius? a. 129.6 kJ b. 146.2 kJ c.

What is the charge on Iodine

A sample of water with a mass of 123.00 kg is heated from 25 C to 97 C. If the specific heat of water is 1 J-1 kg K-1 then how much energy is required?

What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?

What is the lowest layer of the atmosphere and what is its highest altitude?

An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84 neutrons. What happened to the atom?

A compound of material formed by a chemical is known as?

Which of these molecules experience london dispersion force?