Chemistry Stoichiometry?

syzygy

New member
What number of atoms of phosphorus are present in 1.36 g of each of the compounds listed?
1. P4O6
2. Ca3(PO4)2
3. Na2HPO4

Chloral hydrate (C2H3Cl3O2)
Molar mass: 165.394
1. What is the mass in grams of 3.2 multiplied by 10-2 mol chloral hydrate?
2.What number of chlorine atoms are in 4.9 g chloral hydrate?
3.What mass of chloral hydrate would contain 1.0 g Cl?

if anyone could give me steps to these as examples for the rest of my work it would really help in the understanding of it.
 
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