1how many grams are there in 7.4 x 1023 molecules of agno3?
2 how many grams are there in 7.5 x 1023 molecules of h2so4?
3 how many grams are there in 9.4 x 1025 molecules of h2?

plz

In molecules of are 209 g

In molecules of are 123 g

In molecules of are 312 g

Explanation:

First remember that 1 mole of any element has molecules (this number is a constant).

we know that the molecular mass of an element relates the grams of that substance in 1 mol

To calculate how many grams of are in molecules we use a rule of three

The molecular mass of is 169.87 g/mol

In molecules of are 209 g

To calculate how many grams of are in molecules we repeat the previous procedure

The molecular mass of is 98.079 g/mol

In molecules of are 123 g

To calculate how many grams of are in molecules we repeat the previous procedure

The molecular mass of is 2 g/mol

In molecules of are 312 g

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.