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A glass of water contains 1.2 x 1024 molecules of water. An additional 5.0 moles of water are poured into the glass. How many molecules of water are in the glass?

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meerkat18
To answer this question, we convert the number of moles added of water to number of molecules using Avogadro's number, 6.022 x10^23 molecules per mole. 5 moles is equal then to 3.011 x10^24 molecules. we add the initial number of 1.2 x 1024, the total is 4.211 x10^24 molecules. 

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