You must convert 10.0 l of nitrogen gas from a temperature of 300 k and a pressure of 203 kpa to stp. which of the following is the best law to use?
charles's law
combined gas law
boyle's law
avogadro's law

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.