A 350.0 g sample of copper is initially at 25.0 °C. It absorbs 12.50 kJ of heat from its surroundings. What is its final

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A 350 0 G Sample Of Copper Is Initially At 25 0 C It Absorbs 12 50 Kj Of Heat From Its Surroundings What Is Its Final 1 (48.29 KiB) Viewed 104 times

A 350 0 G Sample Of Copper Is Initially At 25 0 C It Absorbs 12 50 Kj Of Heat From Its Surroundings What Is Its Final 2 (64.08 KiB) Viewed 104 times

A 350.0 g sample of copper is initially at 25.0 °C. It absorbs 12.50 kJ of heat from its surroundings. What is its final temperature, to the nearest tenth of a degree? (specific heat = 0.3874JgK-1 for copper) Select one: a. 38.8 °C b. 67.2 °C C. 92.2 °C d. 117.2 °C
Which one of the following reactions is accompanied by an INCREASE in entropy? → Select one: a. N2(g) + 3 H2(g) 2 NH3(g) b. 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(s) C. Ba(OH)2(s) + CO2(g) BaCO3(s) + H2O(1) d. NH4NO2(s) N2(g) + 2 H2O(1)
Using the standard entropy values: = H2(g), Sº = +130.6J mol-1 K-1 12(s), 5° = +116.12 ) mol-? K-1 HI(g), Sº = +206.0J mol-1 K-1 calculate the standard entropy change, ASº, for the reaction: H2(g) + 12(s) 2 HI(g) Enter your answer in J mor? K-", to one decimal place. Do not enter units. Answer:
Calculate the standard free energy change, AG°, for the reaction: Ni(CO)49) Ni(s) + 4 CO(g) at 298 K, given AHºr = -220.0 kJ/mol and AS°= 422.6J/mol: = = Select one: -345.9 kJ/mol +202.6 kJ/mol -642.6 kJ/mol -345.9 kJ/mol
Using the standard free energies of formation: CH4(g), Ap Gº = -50.8 kJ mol-1 Af Gº = -394.4 kJ mol-1 H2O(g), Af Gº = -228.6 kJ mol-1 O2(g), Af Gº = 0.0 kJ mol-1 CO2(g), = = calculate the standard free energy change, AG°, for the reaction: CH4(g) + 2 O2(g) → 2 H2O(g) + CO2(g) Enter your answer in kJ mol-to one decimal place. Do not enter units. Answer: