What is the mass of 4.38 x 10^24 formula units of sodium chloride (NaCl) ?

Mass = 427.05 g

Explanation:

Given dа ta:

Formula units of sodium chloride = 4.38 * 10²⁴

Mass of NaCl = ?

Solution:

One mole contain formula units = 6.022 * 10²³

4.38*10²⁴ formula units * 1mol / 6.022 * 10²³ formula units

0.73 * 10¹ mol

7.3 mol

Mass of NaCl:

Mass = number of moles * molar mass

Mass = 7.3 mol * 58.5 g/mol

Mass = 427.05 g