What is the molarity(M) of a solution composed of 10 moles of Cobalt Chloride (CoCl2), dissolved in 2.5 liters of water?

What is the number of moles in 15.0 g ash3?

Find the mass, in grams, of 5.00*10^23 molecules of f2

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?