2. How can you use mass and volume to find density of a
substance?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure