A diver traveled 20 kilometers in 30 minutes. What is the average speed of this driver in km/h

Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water