Question

If you add 4.6 g of sodium to water, how many molecules of H2 will be formed? (4points)

2Na(s)+2H2O(l)-->2NaOH(aq)+H2(g)

Answer 1

mols Na = grams/atomic mass.
Uing the coefficients in the balanced equation, convert mols Na to mols H2.
Convert mols H2 to molecules. 1 mol contains 6.02E23 molecules.

Answer 2

thanks