scorse
scorse scorse
  • 03-03-2021
  • Chemistry
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Please do question 9 and 10

Please do question 9 and 10 class=

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evgeniylevi
evgeniylevi evgeniylevi
  • 03-03-2021

Answer:

9) 60; 10) 0.2583

Explanation:

9) M(SiO₂)=28+16*2=60 (gr/mol);

10) if one mole is in 60gr., then for 15.5 gr.:

1/60=x/15.5; ⇒ x=15.5/60≈0.2583(mol).

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