Question

student used a carbon pencil to write

his homework. The mass of this was

found to be 5 mg. With the help of this

calculate.

a. The number of moles of carbon in his

homework writing.

(Ans : 4.16 x 10-4)​

Answer 1

4.16*10-4

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Answer 2

$4.16 \times 10 - 4$