Why is radioactive decay used to determine age of rocks?

Properties of solids depend on:

What elements can the compound ca (no3) 2 be decomposed into?

Which is not an example of a state change? wood burning in a fire. water turning to steam. gold melting. carbon dioxide freezing into dry ice?

True or false The more particles and object has any given temperature the more thermal energy it has

The complete combustion of acetylene, C2H2 (g), produces 1300. kJ of energy per mole of acetylene consumed. How many grams of acetylene must be burned to produce enough heat to raise the temperature of 1.00 gal of water by 12.

A student states the following: "Since acetone (nail polish remover) evaporate more readily than water, one would assume that acetone has weaker intermolecular forces than water." Evaluate their claim. (2 sentences)

A catalyst can only be used once. True False

On what basis do we distinguish between substances and separate them from one another?

What is the net ionic equation for the following reaction? H2CrO4 + Ba (OH) 2

How does improving food-storage facilities make farming more sustainable? A. It decreases the amount of water needed. B. It keeps food from rotting as quickly and being wasted. C. It decreases the amount of land needed. D.