Answer:
(a) Molar
mass of water = 2x1+16=18 g
1 mol =6.022 x 1023
molecules
=18 g of
water
1 molecule weigh
(b) 1 mole
of element ^contains
=6.022 x1023
atoms
1.66 x 1020
atoms weigh 16.26 mg
=16.26 x10-3g
6.022 x 1023
atoms will weigh
Therefore, atomic
mass of element X is 59 u.
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