× 10 212 (9). Be sure to answer all parts. A gas expands from 2.20 × 102 mL to 9
ID: 104157 • Letter: #
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× 10 212 (9). Be sure to answer all parts. A gas expands from 2.20 × 102 mL to 996 mL at a constant temperature. Calculate the work done (in joules) by the gas if it expands (a) against a vacuum. (b) against a constant pressure of 4.00 atm 314 + (10). Enter your answer in the provided box. A 6.02-kg piece of copper metal is heated from 21.5°C to 312.3°C. Calculate the heat absorbed (in k.J)by the metal. The specific heat of copper is 0.385 J/g oC k.l (11). Enter your answer in the provided box. The enthalpy of combustion of benzoic acid (C6HSCOOH) is commonly used as the standard for calibrating constant-volume bomb calorimeters; its value has been accurately determined to be -3226.7 k.J/mol. When 3.4327 g of benzoie acid are burned in a calorimeter, the temperature rises from 22.84°C to 26.67°C. What is the heat capacity of the bomb? (Assume that the quantity of water surrounding the bomb is exactly 2250 g.) (12). Be sure to answer all parts. Calculate the heats of combustion for the following reactions. Use the standard enthalpies of formation. (a) C,Hdg) + 302(g) CO2(g) + 2H20() k.J/mol (b) 2 H2S(g) + 3O2(g) 2H20(/) + 2SO2(g) kJ/mol (13). Enter your answer in the provided box.Explanation / Answer
10)
Heat absorbed = mC(T2-T1)
= 6020 g * 0.385 J/gC * ( 290.8)
= 674 kJ
Only one question should be answered according to Chegg rules. . please post separately
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