How many grams are there in 7.5 x 1023 molecules of H2SO4

It's a

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

27. =3,500,000 x 4,000 = 14,000,000,000

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