3 years ago

Is for which country

1 answer:

4 0

Answer: Peru

Explanation: The flag for Peru, which may show as the letters PE on some platforms. The Flag: Peru emoji is a flag sequence combining

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Keep smiling world needs it 

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3 years ago

pyrite known as fools gold has the chemical formula FeS2. What is the weight fraction of iron Fe in pyrite

GREYUIT [131]

$\frac{55.845}{119.975}$ or 46.55%

Explanation:

Formula of pyrite = FeS₂

Problem:

Weight fraction of Fe in FeS₂

Solution

Atomic mass of Fe = 55.845g/mol

Atomic mass of S = 32.065g/mol

To find the weight fraction of Fe in FeS₂:

Weight fraction = $\frac{atomic mass of Fe}{molar mass of [tex]FeS_{2}$ }[/tex]

molar mass of FeS₂ = [55.845 + 2(32.065)] = 119.975g/mol

Weight fraction of Fe = $\frac{55.845}{119.975}$

As a percentage, weight fraction of Fe = 46.55%

#learnwithBrainly

4 0

3 years ago

Is for which country ​

Is for which country