Can you explain this chemistry problems?

Question

How many moles of C2H3Cl3O2 molecules are in 500.0 g chloral hydrate?

Answer 1

one mole chloral hydrate is 165.403g

? moles in 500g

(500)1/165.403 = 3.023 moles

1 mole has 6.022x10*23 molecules (Avogadro's constant)

3.023 moles has

(3.023)(6.022x10*23)/1 = 1.820x10*24

now for ya

Answer 2

This is very similar to the other problem.

Work out the molar mass of chloral hydrate (g/mol). Divide mass (500g) by the mass per mole (i.e. molar mass) and that will give you the number of moles.

Perhaps you need to review the concepts of mole and molar mass.

Answer 3

The molar mass of C2H3Cl3O2(chloral hydrate) is 165.403 g/mol.

1 mol = 165.403 g

x mol = 500 g

x = (500*1)/165.403 = 3.0229197777549379394569626911241 moles.

Answer 4

Molecular mass of chlorl hydrate is 2*12+1*3+35.5*3+2*16=165.5 divide 500 by 165.5

=3.2 moles approximately.

you can calculate it to three/ four decimal places if you like.