She needs to know the amount of slices every person is going to eat
B. is positive
H20 (l)--> H20 (g)
when that happens, the heat is absorbed into the liquid to change the state of the liquid to gas; therefore, in order to change to a gaseous state, heat must be a reactant. and so enthalpy is increasing
The answer is C because Vinegar trigger bubbles.
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Nh4)3po42 due to no oil base