Suppose 10.0 g of oxygen (O2) gas is hea...

Suppose 10.0 g of oxygen `(O_2)` gas is heated at constant atmospheric pressure from `25.0^@ C` to `125^@ C`. (a) How many moles of oxygen are present? (See Table 20-1 for the molar mass.) (b) How much energy is transferred to the oxygen as heat? (The molecules rotate but do not oscillate.) (c) What fraction of the heat is used to raise the internal energy of the oxygen?

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`0.313 mol , (b) 910 J , (c ) ~~ 0.714`

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