Question

convert 9 gram of water into mole​

Answer 1

Answer:

Water(H2O) has a molecuar mass of 18, this means it weights 18 g per mole. A mole is 6.0221415*1023molecules (Avogadro's number). If you have 1 g of water, you therefore have 1/18 of a mole, or 3.34*1022 molecules.

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Answer 2

Answer:

M(H2O) =18g/mol

N=9g/18g/mol

0.5 mol

N=N/Na

N=n. Na=0.5(6.022*10'23)

N=3.011 *10'23