a) copper b) magnesium c) mercury d) silver e) lead _____How much heat is gained by nickel when 29.2 g of nickel is warmed from 18.3°C to 69.6°C? The specific heat of nickel is 0.443 J/(g · °C). a) 2.37 × 102 J b) 9.00 × 102 J c) 22.7 J d) 6.64 × 102 J e) 30.8 J A 170.0-g sample of metal at 78.0°C is added to 170.0 g of H2O(l) at 15.0°C in an insulated container. The temperature rises to 17.9°C. Neglecting the heat capacity of the container, what is the specific heat of the metal? The specific heat of H2O(l) is 4.18 J/(g · °C). Given: Pb(s) + PbO2(s) + 2H2SO4(l) 2PbSO4(s) + 2H2O(l); = kJ → ∆H° –509.2 SO3(g) + H2O(l) H2SO4(l); = kJ → ∆H° –130. determine for the following thermochemical equation. ∆H° Pb(s) + PbO2(s) + 2SO3(g) 2PbSO4(s) → What is of the following reaction? ∆H° CO2(g) + 2CH4(g) C3H8(g) + O2(g) → Substance ∆H°f (kJ/mol) CO2(g) –393.5 CH4(g) –74.9 C3H8(g) –104.7 Calculate the heat needed to melt 60 grams of ice at -10 *C to gas at 110*C
a) copper b) magnesium c) mercury d) silver e) lead _____How much heat is gained by nickel when 29.2 g of nickel is warmed from 18.3°C to 69.6°C? The specific heat of nickel is 0.443 J/(g · °C). a) 2.37 × 102 J b) 9.00 × 102 J c) 22.7 J d) 6.64 × 102 J e) 30.8 J A 170.0-g sample of metal at 78.0°C is added to 170.0 g of H2O(l) at 15.0°C in an insulated container. The temperature rises to 17.9°C. Neglecting the heat capacity of the container, what is the specific heat of the metal? The specific heat of H2O(l) is 4.18 J/(g · °C). Given: Pb(s) + PbO2(s) + 2H2SO4(l) → 2PbSO4(s) + 2H2O(l); ∆H° = –509.2 kJ SO3(g) + H2O(l) → H2SO4(l); ∆H° = –130. kJ determine ∆H° for the following thermochemical equation. Pb(s) + PbO2(s) + 2SO3(g) → 2PbSO4(s) What is ∆H° of the following reaction? CO2(g) + 2CH4(g) → C3H8(g) + O2(g) Substance ∆H°f (kJ/mol) CO2(g) –393.5 CH4(g) –74.9 C3H8(g) –104.7 Calculate the heat needed to melt 60 grams of ice at -10 *C to gas at 110*C