Please show me how to solve this problem. I don\'tunderstand very well. I will g

Question

Please show me how to solve this problem. I don'tunderstand very well.
I will give proper respect as soon as possible. PLEEEASE helpme!!! #3.21(Avogadro7s Number and the Mole) A mole of O2 molecules has mass 32g (that is, themolecular "waight" of O2 is 32g/mol). What is the massof a single O2 molecule (in u and in grams)? Book answer is 32u=5.3x10-23g #3.21(Avogadro7s Number and the Mole) A mole of O2 molecules has mass 32g (that is, themolecular "waight" of O2 is 32g/mol). What is the massof a single O2 molecule (in u and in grams)? Book answer is 32u=5.3x10-23g

Explanation / Answer

One mole of a substance contains Avogadro number of atomsthat is N = 6.022 * 1023 atoms 1 mole of O2 molecule has mass m = 32 g Therefore,the mass of a single O2 molecule (ingrams) is mo = (m/N) = (32/6.022 * 1023) = 5.3 *10-23 g we know that 1 atomic mass unit = 1.66 * 10-27 kg = 1.66 *10-27 * 103 g = 1.66 * 10-24g or 1 g = (1/1.66 * 10-24) u or mo = 5.3 * 10-23 * (1/1.66 *10-24) u = 32 u

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