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3 years ago

1.505 times 10^23 Na atoms

Chemistry

1 answer:

Svet_ta [14]3 years ago

4 0

Explanation:

Given:

Number of atoms = 1.505 x 10²³

Let us solve for the number of moles and mass of this atom of sodium.

A mole of a substance is the amount of that substance that contains the avogadro's number of particles.

1 mole of Na = 6.02 x 10²³ atoms

Number of moles of Na = $\frac{1.505 x 10^{23} }{6.02 x 10^{23} }$ = 0.25moles

Mass of Na = number of moles x molar mass

Molar mass of Na = 23g/mole

Mass of Na = 0.25 x 23 = 5.75g

learn more:

Number of moles brainly.com/question/1841136

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Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it

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Explanation:

We are given:

Initial concentration of $COF_2$ = 2.00 M

The given chemical equation follows:

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The question is incomplete, the complete question is:

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Explanation:

Given values:

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Using unitary method:

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The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(1)

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