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Answer the following question:
Calculate the molar mass of the following substances.
(a). Ethyne (C_2H_2) molar mass is .
(b). Sulphur molecule (S_8) molar mass is .
(c). Phosphorus molecule (P_4) molar mass is .
(d). Hydrochloric acid (HCl) molar mass is .
(e). Nitric acid (HNO_3) molar mass is .
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