In a mixture of oxygen and nitrogen gas, 40% percent of the total gas pressure is exerted by the NITROGEN. If the total pressure is 2.0 atm, what
pressure does the OXYGEN exert? *
0.8 atm

2.0 atm

1.2 atm
0.4 atm

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