Chemistry, 17.11.2019 16:31 phil820

Fossil a is found in a rock layer above a layer containing fossil b. which fossil is probably older?

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Chemistry, 21.06.2019 23:10, ChloeLiz7111

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Chemistry, 22.06.2019 12:30, azzyla2003

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

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Chemistry, 22.06.2019 14:40, elawnnalewis4855

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Chemistry, 22.06.2019 20:20, carcon2019

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .