Question

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

Answer 1

To find the mass of 6.02 x 10^23 atoms of arsenic, we can use Avogadro's number and the molar mass of arsenic.

Step-by-step explanation:

The mass of 6.02 x 10^23 atoms of arsenic can be calculated using Avogadro's number and the molar mass of arsenic. Avogadro's number is a conversion factor that relates the number of atoms or molecules to the amount in moles. For arsenic, the molar mass is 74.92160 grams per mole. So, to find the mass of 6.02 x 10^23 atoms of arsenic, we can set up the following conversion:

6.02 x 10^23 atoms of arsenic * (1 mole of arsenic / 6.02 x 10^23 atoms) * (74.92160 grams / 1 mole) = mass of 6.02 x 10^23 atoms of arsenic

Calculating this expression gives us the mass of 6.02 x 10^23 atoms of arsenic.

Answer 2

Mass = 74.9 g

Step-by-step 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