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strojnjashka [21]
3 years ago
10

What is the mass in g of 7.009 x 10^21 molecules of Pl3?

Chemistry
1 answer:
ycow [4]3 years ago
4 0
I have completed the problem

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One mole of nitrous acid (HNO2) contains 1.00 gram of hydrogen (H), 14.0 grams of nitrogen (N), and 32.0 grams of oxygen (O). Wh
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Mass % of nitrogen = mass of nitrogen*100  / total mass 

= 14*100 / (1+ 14 + 32)

= 14*100 / 47
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