Question

What mass of water (in grams) is produced by the reaction of 23.0 g of SiO2?

Answer 1

The mass of water produced by the reaction of the 23 g of $SiO_2$  is 13.8 g.

The given chemical reaction;

$4Hf (g) \ + \ SiO_2 (s) \ --> \ SiF_4(g) \ + \ 2H_2O(l)$

In the given compound above, we can deduce the following;

• molecular mass of $SiO_2$ = 28 + (2 x 16) = 60 g
• molecular mass of $2H_2O$ = 2(18) = 36 g

60 g of $SiO_2$  --------- 36 g of water

23 g of $SiO_2$  ------------- ? of water

$mass \ of \ water = \frac{23 \times 36}{60} = 13.8 \ g \ of \ water$

Thus, the mass of water produced by the reaction of the 23 g of $SiO_2$  is 13.8 g.

• "Your question is not complete, it seems to be missing the following information";

In the reaction of the given compound, $4Hf (g) \ + \ SiO_2 (s) \ --> \ SiF_4(g) \ + \ 2H_2O(l)$, what mass of water (in grams) is produced by the reaction of 23.0 g of SiO2?

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