5.5 x 10^23 molecules of CO is dissolved in 222ml of water to have what molarity?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

What is the measured amount of a product obtained from a chemical reaction?

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?