Which of the following substances has a standard heat of formation ΔH°f of zero? A. Pb(s) at 500°C. (The melting point of Pb is 328 °C.) B. C3H8 (g) at 25.0°C and 1 atm pressure. C. Solid glucose at room temperature. D. N2(g) at 1 bar pressure.

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raspberrycattle455Lv1

11 Dec 2019

Which of the following substances has a standard heat of formation ΔH°_f of zero?

A. Pb(s) at 500°C. (The melting point of Pb is 328 °C.)

B. C₃H₈ (g) at 25.0°C and 1 atm pressure.

C. Solid glucose at room temperature.

D. N₂(g) at 1 bar pressure.

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Kenneth DuqueLv10

3 Nov 2020

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