Chemistry, 12.07.2019 04:00 marshallmattah
Chemistry. which statement about delta hf is true? a.) it is zero for any compound in its standard state. b.) it is positive when the bonds of the product store more energy than those of the reactants. c.) it is negative when a compound forms from elements in their standard states. d.) it is zero for any element that is in the liquid state.
Answers: 2
Chemistry, 22.06.2019 12:30
Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?
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Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Chemistry, 22.06.2019 22:30
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Chemistry, 23.06.2019 07:30
The compound formed from 2 atoms of hydrogen and one atom of oxygen is
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Chemistry. which statement about delta hf is true? a.) it is zero for any compound in its standar...
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