In 2013 the world consumption of oil was estimated at 3.3 ´ 1010 barrels per year. The world reserves of oil in 2013 were estimated as 1.324 ´ 1012 barrels. Estimate how many years the current reserves of oil will last assuming that consumption remains at the 2013 rate.

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