A piece of limestone erodes due to acid rain. this process can be best described as a

slow chemical change.

rapid chemical change.

slow physical change.

rapid physical change.

What is the purpose of adding oil to a car's engine? A To increase the mass of the engine so it can pull larger loads B To increase the temperature and pressure of the engine C To reduce friction and allow the engine to run more smoothly D To

What is the molarity of a 650. mL solution containing 64 grams of NaCl?

What kinds of rocks would you expect to see on Mars? What evidence do you have

An atom has a mass number of 52. if there are 27 neutrons in the atom, then the atom must be:

5. Which contains more nitrogen: 60g of urea, (NH2) 2CO, or 100g of ammonium sulphate, (NH4) 2SO4

How many atoms of Hydrogen in the products of the following equation? 3NO2 + H2O - -> NO + 2HNO3 1 3 4 2

What reactants form a combustion reaction? O A. A hydrocarbon and oxygen O B. Hydrogen and water vapor O C. A hydrocarbon and water O D. Water vapor and oxygen

Is the Sun bigger and brighter than Betelgeuse?

What is the si unit for the quantity of particles in a sample?

How many moles of ammonia are produced when 8 moles of nitrogen gas react with hydrogen gas?