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3 years ago

What is the mass of 6.02 x 10^23 atoms of arsenic?

Chemistry

1 answer:

Anvisha [2.4K]3 years ago

4 0

Answer:

Mass = 74.9 g

Explanation:

Given data:

Number of atoms of arsenic = 6.02×10²³ atoms

Mass of arsenic = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022× 10²³ is called Avogadro number.

one mole = 6.02×10²³ atoms

So number of moles of arsenic are 1 mol.

Mass of arsenic:

Mass = number of moles × molar mass

Mass = 1 mol × 74.9 g/mol

Mass = 74.9 g

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