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Chemistry, 21.06.2019 12:50
Use the standard enthalpies of formation for the reactants and products to solve for the δhrxn for the following reaction. (the δhf of c2h4 is 52.26 kj/mol, co2 is -393.509 kj/mol, and h2o is -241.818 kj.) c2h4 (g) + 3o2(g) 2co2 (g) + 2h2o(g) δhrxn = the reaction is .
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Chemistry, 21.06.2019 16:00
Measuring which physical property is most likely to produce the most precise results when trying to identify a substance
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Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?
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What produces wave a)sound b) heats c)transfer of energy d)vibrations
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What is the difference between melting and burning a substance? Is mass conserved in either process?...
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