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Internal Energy

Q. Calculate the change in internal energy when 2.00 moles of CO are converted to 2.00 moles of CO2 at atmospheric pressure and 25.0 °C: 2CO(g) + O2(g) → 2CO2(g) ∆rHϴ = −566.0 kJ

Solved • Jun 21, 2019

Internal Energy

Q. In a closed system consisting of 2.00 mol of H2SO4 and 2.00 mol of CaCO3 in a conical flask including a syringe (shown in the diagram below), the following reaction takes place at 25.0 °C and 100 kPa. H2SO4(l) + CaCO3(s) → CaSO4(s) + H2O(l) + CO2(g)

Solved • Jun 19, 2019

Internal Energy

Q. A gas expands from a volume of 3.58L to 8.64L under a constant external pressure of 1.22atm. How much work is done on the gas in joules? Give the value to three significant figures.

Solved • May 6, 2019

Internal Energy

Q. Hi, please help me to solve 1.2 and 1.4. Thanks!

Solved • May 3, 2019

Internal Energy

Q. If a system does 31 kJ of work on the surroundings and absorbs 68 kJ of heat, what is ΔE for the system?

Solved • Apr 29, 2019

Internal Energy

Q. For which following reaction is H equal to E?

Solved • Apr 27, 2019

Internal Energy

Q. Which of the following is true for an ideal gas at constant temperature? (a) only H =0 (b) H and E = 0 (c) only H =0 (d) only E=0 (e) H and E = 0

Solved • Apr 27, 2019