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Tag Archives: N2

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Standard Enthalpies of Formation

ScienceBy William Anderson (Schoolworkhelper Editorial Team)July 5, 2010Leave a comment

The quantity of energy associated with the formation of one mole of a substance from its elements (in their standard states). The standard states (at SATP) of most elements is solid, except for the gaseous diatomic molecules, H2, O2, N2, F2, Cl2, and the two liquid elements Hg and Br2. These energies can be looked…

The Nitrogen Cycle

ScienceBy William Anderson (Schoolworkhelper Editorial Team)July 5, 20101 Comment

Nitrogen is required by living things to: 1. make proteins, become enzymes and make up the structures of living things 2. make nucleic acids that become DNA, the hereditary material of living things – 80% of the air around us is nitrogen gas (N2) but N2 cannot be used by most living things – N2…

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