Ferrous sulphate heptahydrate is used to fortify foods with iron.

Question:

Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve $10 \mathrm{ppm}$ of iron in 100 $\mathrm{kg}$ of wheat is________.

Atomic weight $: \mathrm{Fe}=55.85 ; \mathrm{S}=32.0$;

$\mathrm{O}=16.00$

Solution:

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