How many grams are there in 7.50 x 10^23 molecules of h2so4?

122.5g

1st, we need to convert 7.50x1023molecules into moles

7.50x1023molecules x 1mol6.02x1023 =1.25mol

Now we convert 1.25mol to grams (g)

1.25mol x 98g1mol = 122.5g

Note, when converting to grams, its gram formula mass / 1mol. The formula mass is all the element's masses added together

H2 = 1g x 2 = 2g
S = 32g
O4 = 16g x 4 = 64g
2g + 32g + 64g = 98g1mol

Answer the air near the ground cools to its dew point