Please i need helppp 1) Determine the mass, in grams, for 1.25e23 molecules of H₂

2)How many grams are there in 9.40e25 molecules of H₂?

3)How many grams are there in 1.00e24 molecules of BCl₃?

1. they vary with a higher number because boiling is way hotter than melting

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

5.6⋅10−^19  j

do you need the explaination?