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3 years ago

How much calcium can be recovered from 75.0g of calcium fluoride

Chemistry

1 answer:

7nadin3 [17]3 years ago

3 0

38.46g

Explanation:

Given parameters:

Mass of CaF₂ = 75.0g

Unknown:

Mass of calcium that can be recovered = ?

Solution:

This is a mass percentage problem and we need to solve it accordingly.

To solve this problem;

Find the molar mass of CaF₂

Find the ratio between the molar mass of Ca and that of CaF₂

Multiply by the given mass

Molar mass of CaF₂ = 40 + (2 x 19) = 78g/mol

Mass of calcium = $\frac{40}{78}$ x 75 = 38.46g

learn more:

Mass percentage brainly.com/question/8170905

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What is the molarity of a KF(aq) solution containing 3.0 mol of KF in 2.00L of solution?

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Answer : The molarity of $KF$ in the solution is 1.5 M.

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$\text{Molarity}=\frac{\text{Moles of }KF}{\text{Volume of solution (in L)}}$

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3 years ago

What is the total energy change for the following reaction:CO+H2O-CO2+H2

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Answer:

$\large \boxed{\text{-41.2 kJ/mol}}$

Explanation:

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