If you have 6.7 grams of Li2O in 3500 mL of solution, what is the molarity? (Round answers to the nearest hundredth)

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

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2

What does a numerical subscript following an element in a chemical formula mean?