Question

calculate the total percentage of oxygen in magnesium nitrate crystals [Mg (NO3) 2.6H 2 O] (molecular weight of Mg = 24, N = 14, O=16, H=1)​
a.65%
b.75%
c.85%​

Answer 1

Answer:

b

Explanation:

total weight = 28 +2 x 14 + 6 x 16 + 12 + 6 x 16 = 256

weight of oxygen = 192

so %= 75

Answer 2

Answer:

answer in clip

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