Nathan was assigned the task of calculating the density of a substance. he measured the volume and found it to be 300cm3. the mass of the substance was 520g. what was the density?
a. 2.0g/cm^3
b. 1.7g/cm^3
c. 1.0g/cm^3
d. 0.7 g/cm^3
e. 1.9 g/cm^3

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u. s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?