Answers

2014-08-03T19:47:08+05:30
2×10²⁰ molecules weigh 44mg
since molecular mass of every substance contains 6 X 10²³ molecules
therefore,
mass of 6 X 10²³ molecules= ( 44 X 6 X 10²³) ÷ (2 X 10²°) =132000 mg= 132 g
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