* Fasdfasdfsadfsdaaboratory volcano can be made from ammonia dichromate. When ignited, the * compound decomposes into a fiery display. If the decomposition of 1mol ammonium * dichromate produces 315kJ of heat energy at a constant pressure, how much heat energy * would be produced by 28.3g of the solid? * (NH4)2Cr2O7(s)  N2(g) + 4H2O(g) + Cr2O3(s) * 2. How many kilojoules of heat are evolved by a reaction in a calorimeter, where the * temperature of 320.0g water increases from 19.5˚C to 22.83˚C? Given: The specific heat * capacity of water is 4.186J/gK. * 3. Suppose you pick up a 16Kg “shot-put” (ball of iron) at a track event. The iron ball has * the same temperature as the atmosphere on a cool day, 16˚C. How many calories of heat * energy must the iron ball absorb to reach the temperature of your body, 37˚C? Given: The * specific heat capacity of iron is 0.460J/gK. * 4. How many kilocalories of heat energy are required to heat all of the aluminum in a roll of * aluminum foil, 500g, from room temperature25˚C to the temperature of a hot oven * 250˚C? Given: The specific heat capacity of aluminum is 0.900J/gK. * 5. Calculate the amount of heat released from the combustion of 35.0g of propane gas, * C3H8. Given: The molar heat of combustion for propane is 2220kJ/mol. * 6. Using the amount of heat released from the propane in problem five to warm up 200g of * water, what would be the change in temperature of the water? The specific heat capacity * of water is 4.186J/gK. * 7. How much octane, C8H18, should go through combustion to produce 10,000kJ of energy? * Given: The molar heat of combustion for octane is 5471kJ/mol. * 8. When 5.8g of methane gas, CH4, reacts with oxygen gas to produce carbon dioxide gas * and water vapor, 320kJ of energy is released. Calculate the molar enthalpy of combustion * for methane in kJ/mol? * 9. Calculate the total heat absorbed when 25 g of ice is raised from a -32 degf bb b b b b b b b b b b b b b b b b b b b b b b b b b