Question #806cd

1 Answer
Grimalkyne
Feb 25, 2016

740g

Explanation:

The molecular mass of
Calcium = 40.078
Oxygen = 15.999
Hydrogen = 1.008

There are two Hydrogen atoms and two Oxygen atoms

So one mole of Ca(OH)_2 weighs
40.078 + 15.999*2 + 1.008*2 = 74.092g

Therefore 10 moles weighs 740.92g or, rounded to the nearest 10, 740g

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