40 POINTS Part D
Scientists have done careful and repeated experiments to determine enthalpy changes for many different chemical
reactions. The accepted reaction enthalpies for the chemical reactions in tasks 1 through 3 are given in the table.
Compare your experimentally determined reaction enthalpies from these tasks with the accepted enthalpies. Are
your results similar to or different from the accepted values? What may have contributed to any differences?
Reaction
Accepted Reaction Enthalpy,
AH
CuSO4 + 5H20 = CuSO4.5H20
-78,000 J/mol
Zn + CuSO4 = Cu + ZnSO4
-217,000 J/mol
H3C6H507 + 3NaHCO3 = Na3C6H5O7 + 3CO2 + 3H20 480,000 J/mol
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BI UX X, Font Sizes
A
5
1 E 3

Rn in the right answer

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Answer246 k;