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Suppose 18.7 g of oxygen (O2) is heated at constant atmospheric pressure from 38.5°C to 123°C....

Suppose 18.7 g of oxygen (O2) is heated at constant atmospheric pressure from 38.5°C to 123°C. (a) How many moles of oxygen are present? (Take the molar mass of oxygen to be 32.0 g/mol) (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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(A) No. (m 167 32 0.58 乙

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