How do you find the molar mass for ba (NO3) 2

A gas initally has a volume of 25 L at a pressure of 90 kpa. If the gas is allowed to expand to 50 L. What is the final pressure?

What do we beileve is at the center of the milky way A) two stars that have collided together B) a cluster of stars C) A black hole D) A collapsed planet

Is ocean water a solution

What is the mass of 5.43 moles of aluminum sulfate

Which element contains the largest number of neutrons per atom? a. Copper - 64 b. Nickel - 59 c. Iron - 56 d. Manganese - 55

A 1.50-g sample of hydrated copper (II) sulfate was heated carefully until it had changed completely to anhydrous copper (II) sulfate () with a mass of 0.957 g. Determine the value of x.

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

A metal surface becomes dull because of continued abrasion. chemical or physical

What types of tissues build the digestive system?

Chemical bonds? A.) Combine compounds to form elements B.) Hold atoms together to form compounds C.) Are always covalent D.) Are always ionic