How many grams do 5.3•10^26 atoms of sodium weigh

20233.4 g

Explanation:

First, determine the moles by dividing the number of atoms by Avagadro's number.

n = (5.3 * 10^26) / (6.022 * 10^23)

n = 880.106276984

Now determine the mass by multiplying the number of moles by the molecular mass of sodium

m = n * MM

m=880.106276984 * 22.989769

m = 20233.4400033

m = 20233.4 g