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3 years ago

How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)

Chemistry

1 answer:

SashulF [63]3 years ago

4 0

<h3>Answer:</h3>

0.144 moles

<h3>Explanation:</h3>

The relationship between mass of a compound, number of moles and molar mass of the compound is given by;
Number of moles = Mass ÷ Molar mass
Molar mass is equivalent to the relative formula mass of the compound that is calculated the atomic masses of the elements making the compound.

In this case;

Our compound, KClO3 will have a molar mass of;

= 39 + 35.5 + 4(16)

= 138.5 g/mol

Mass of KClO3 is 20 g

Therefore;

Number of moles = 20 g ÷ 138.5 g/mol

= 0.144 moles

Thus, the number of moles in 20 g of KClO3 is 0.144 moles

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Answer : 135 grams of sodium has 5.869 moles.

Solution : Given,

Mass of sodium = 135 grams

Molar mass of sodium = 23 g/mole

Formula used :

$\text{Moles of sodium}=\frac{\text{Mass of sodium}}{\text{Molar mass of sodium}}$

Now put all the given values in this formula, we get

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2 years ago

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3 years ago

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2 years ago

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2 years ago

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2 years ago

How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)​

How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)