Write an equation because that the formation of NO2(g) native its elementsin its conventional states.

You are watching: Write an equation for the formation of hf(g) from its elements in its standard states.

Express your answer together a chemical equation. Identify all of thephases in your answer.

12N2(g)+O2(g)?NO2(g)

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Correct

Part B

Find ?H?f because that NO2(g) from Appendix IIB in thetextbook.

Express your answer utilizing one decimal place.

?H?f =

33.2

kJ/mol

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Part C

Write an equation for the formation of CaCO3(s) indigenous itselements in its typical states. Write any kind of reference to carbon asC(s).

Express your answer together a chemical equation. Identify every one of thephases in her answer.

Ca(s)+C(s)+32O2(g)?CaCO3(s)

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Part D

Find ?H?f because that CaCO3(s) indigenous Appendix IIB in thetextbook.

Express your answer using one decimal place.

?H?f = kJ/mol

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Part E

Write an equation for the development of HF(g) indigenous its elementsin its standard states.

Express her answer together a chemical equation. Identify every one of thephases in your answer.

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Part F

Find ?H?f for HF(g) indigenous Appendix IIB in thetextbook.

Express your answer utilizing one decimal place.

?H?f = kJ/mol

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Part G

Write an equation because that the formation of C2H5OH(l) from itselements in its traditional states. Write any type of reference to carbon asC(s).

Express her answer as a chemical equation. Identify every one of thephases in your answer.

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Part H

Find ?H?f because that C2H5OH(l) native Appendix IIB in thetextbook.

Express her answer utilizing one decimal place.

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?H?f = kJ/mol

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