Convert 7.10 grams of sodium to atoms.

The answer is option A.

To convert 7.10 grams of sodium to atoms we first find the number of moles and use the formula

N = n × L

N = number of entities

n = number of moles

L = Avogadro's constant which is

6.02 × 10^23

number of moles (n) = mass / Molar mass (M)

Molar mass of sodium = 23g/mol

mass = 7.10g

n = 7.10/23 = 0.309 moles

So number of sodium atoms (N) is

N = 0.309 × 6.02 × 10^23

N = 1.86*10^23 atoms

Hope this helps you.