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rusak2 [61]
3 years ago
7

What is the mass of ice that is melted by 755 J of heat melt a piece of ice?

Chemistry
1 answer:
Anuta_ua [19.1K]3 years ago
3 0

Answer:

755,000 joules

Explanation:

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Why is zinc not extracted from ZnO through reduction using CO?​
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1 year ago
A chemist mixes 1.00 g CuCl2 with an excess of (NH4)2HPO4 in dilute aqueous solution . He measures the evolution of 670 J of hea
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\Delta H will be 90054 J

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Determine the standard enthalpy of formation in kJ/mol for NO given the following information about the formation of NO2 under s
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Answer:

90.3 kJ/mol

Explanation:

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We can find the standard enthalpy of formation for NO using the following expression.

∆H°rxn = 2 mol × ΔH°f(NO₂(g)) - 2 mol × ΔH°f(NO(g)) - 1 mol × ΔH°f(O₂(g))

∆H°rxn = 2 mol × ΔH°f(NO₂(g)) - 2 mol × ΔH°f(NO(g)) - 1 mol × 0 kJ/mol

∆H°rxn = 2 mol × ΔH°f(NO₂(g)) - 2 mol × ΔH°f(NO(g))

ΔH°f(NO(g)) = (2 mol × ΔH°f(NO₂(g)) - ∆H°rxn) / 2 mol

ΔH°f(NO(g)) = (2 mol × 33.2 kJ/mol + 114.2 kJ) / 2 mol

ΔH°f(NO(g)) = 90.3 kJ/mol

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