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Ch.5 - Thermochemistry

Chapter 5, Problem 23a

(a) According to the first law of thermodynamics, what quantity is conserved?

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Hey everyone, so ask which of the following statement is true, based on the first law of thermodynamics. So the first law of thermodynamics states that energy can neither be created nor destroyed, only altered inform. So this can't be A because it says energy is destroyed and it can't be seen because it says energy is neither destroyed nor conserved or d because it says energy is neither created or conserved. So the answer's gonna be be thanks for watching my video, and I hope it was helpful.
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A magnesium ion, Mg2+, with a charge of 3.2⨉10-19 C and an oxide ion, O2-, with a charge of -3.2⨉10-19 C, are separated by a distance of 0.35 nm. How much work would be required to increase the separation of the two ions to an infinite distance?

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Textbook Question

In a thermodynamic study, a scientist focuses on the properties of a solution in an apparatus as illustrated. A solution is continuously flowing into the apparatus at the top and out at the bottom, such that the amount of solution in the apparatus is constant with time. (a) Is the solution in the apparatus a closed system, open system, or isolated system?

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Textbook Question

In a thermodynamic study, a scientist focuses on the properties of a solution in an apparatus as illustrated. A solution is continuously flowing into the apparatus at the top and out at the bottom, such that the amount of solution in the apparatus is constant with time. (b) If the inlet and outlet were closed, what type of system would it be

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Textbook Question

(c) By what means can the internal energy of a closed system increase?

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Textbook Question

Calculate ΔE and determine whether the process is endothermic or exothermic for the following cases: (a) q = 0.763 kJ and w = -840 J.

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For the following processes, calculate the change in internal energy of the system and determine whether the process is endothermic or exothermic: (a) A balloon is cooled by removing 0.655 kJ of heat. It shrinks on cooling, and the atmosphere does 382 J of work on the balloon.

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