Which of the following quantities is equivalent to 594 mg? 

Which particle(s) may be found in the nucleus of an atom?

A chip of ice has a mass of 550.5 mg. What is the mass of this ice in grams? (Just put the number and no units.)

How many chlorine atoms are in 29 molecules of chloroform, CHCl₃?

Which of the following is a pure substance that cannot be broken down into simpler substances by chemical means?

The number 8.07 × 10⁻³ has ___ significant figures. 

A chemist has a block of copper metal (density is 8.96 g/mL). The block weighs 2.30 g. What is the volume of the copper block in mL?  (Just put the number and no units.)

“Laughing gas” (dinitrogen monoxide, also called nitrous oxide) is an example of a(n)

How many miles can you drive, if your car gets 25.00 miles per gallon and you have 12.00 gallons of gas? (Just put the number and no units.)

Calculate the answer and report the correct number of significant figures.  (Just put the number and no units.)   0.02 cm x 2.371 cm