calculate mass of 1.2044 * 10^24 molecules of O2

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Solution

Dear Student

The number of molecules in one mole = $6.023 \times 10^{23} m o l e c u l e s$
So, $1.2044 \times 10^{24} m o l e c u l e s o r 12.044 \times 10^{23} m o l e c u l e s c o n t a i n s 2 m o l e s o f o x y g e n$ .

One mole of oxygen weighs 32 g.
So, 2 moles of oxygen weighs 64 g.

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