What is the molarity of the solution formed by mixing 5.50 mol of sodium nitrate
(NaNO.) with enough water to make 150mL of solution?

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

Can someone me with 3 and 4 plz. this is for masteries test.

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.