What is the atomic mass of an element if 4.00 grams of it contains 2.98x10^22 atoms

The molar mass of the element is 80.8 g/mol

Explanation:

We are given:

Number of atoms =

According to mole concept:

number of atoms are contained in 1 mole of an element

So, number of atoms will be contained in of an element

To calculate the molar mass for given number of moles, we use the equation:

Given mass of element = 4.00 g

Moles of an element = 0.0495 moles

Putting values in above equation, we get:

Hence, the molar mass of the element is 80.8 g/mol

the answer is a and have a great day