A sample of hydrogen is collected over water at 12 oC. The pressure of the hydrogen and water vapor mixture is 0.2atm. The hydrogen is then cooled, at the same volume, to 0 oC. What is the new pressure?

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.

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

How many moles of bromine are needed to produce 3.23 moles of potassium bromide