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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