Answer:
Exothermic Reaction
Explanation:
Its a combustion reaction and they are always exothermic in nature.
Food handler be unsuccessful to wash hands correctly after spending the restroom or when their hands become dirty.
Food handler coughs or sneezes on foodstuff.
Food handler traces or scratches wounds, cuts, or sores, and then touches food.
Food handler works though sick.
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The formula of Iron(III) oxide is Fe2O3
In order to calculate the mass of iron in a given sample of iron(III) oxide, we must first know the mass percentage of iron in iron(III) oxide. This is calculated by:
[mass of iron in one mole of iron(III) oxide/ mass of one mole of iron(III) oxide] * 100
= [(moles of iron * Mr of iron) / (moles of Iron * Mr of Iron + moles of Oxygen * Mr of Oxygen)] * 100
= [(2 * 56) / (2 * 56 + 3 * 16)] * 100
= (112 / 160) * 100
= 70%
Thus, in a 100g sample, the weight of iron will be:
100 * 70%
= 70 grams
