A power company burns approximately $475$ tons of coal per day to produce electricity. If the sulphur content of the coal is $1.2$ % by weight, how many $S O_{2}$ are dumped into the atmosphere each day?

11.4

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12.3

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12.6

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13.5

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Solution

The correct option is A 11.4
The molar masses of $S$ and $S O_{2}$ are $32$ g/mol and $64$ g/mol respectively.
The number of tons of $S O_{2}$ dumped in the atmosphere each day is $475 \times \frac{1.2}{100} \times \frac{64}{32} = 11.4$ tons.

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A power company burns approximately 475 tons of coal per day to produce electricity. If the sulphur content of the coal is 1.2 % by weight, how many SO2 are dumped into the atmosphere each day?

The correct option is A 11.4The molar masses of S and SO2 are 32 g/mol and 64 g/mol respectively.The number of tons of SO2 dumped in the atmosphere each day is 475×1.2100×6432=11.4 tons.

A power company burns approximately $475$ tons of coal per day to produce electricity. If the sulphur content of the coal is $1.2$ % by weight, how many $S O_{2}$ are dumped into the atmosphere each day?

The correct option is A 11.4
The molar masses of $S$ and $S O_{2}$ are $32$ g/mol and $64$ g/mol respectively.
The number of tons of $S O_{2}$ dumped in the atmosphere each day is $475 \times \frac{1.2}{100} \times \frac{64}{32} = 11.4$ tons.