What are the number of molecules of water in CuSO4•5H2O, if the weight of oxygen in it is 36 grams?(a) 3.25 X 10^23(b) 5.25 X 10^23(c) 7.52 X 10^23(d) 9.52 X 10^23I got this question during an interview.Question is taken from The Mole in division Moles, Density & Concentration of Basic Chemical Engineering

What are the number of molecules of water in CuSO4•5H2O, if the weig

1.	What are the number of molecules of water in CuSO4•5H2O, if the weight of oxygen in it is 36 grams?(a) 3.25 X 10^23(b) 5.25 X 10^23(c) 7.52 X 10^23(d) 9.52 X 10^23I got this question during an interview.Question is taken from The Mole in division Moles, Density & Concentration of Basic Chemical Engineering
Answer» Right choice is (C) 7.52 X 10^23 The best I can explain: NUMBER of moles of oxygen = 36/16 =2.25, => number of moles of CuSO4•5H2O = 2.25/9 = 0.25, => number of molecules of water = 0.255(6.022 X 10^23) = 7.52 X 10^23.

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