Have to show calculations!

A.0.5 moles

B.1.0 moles

C.2.0 moles

D. 2.5 moles

E. 3.0 moles

F. 6.0 Moles

I have to figure out of these equations if I know how to do one I can figure b-f out!

How many moles of hydrogen atoms are there in 0.5 mol of CH3CH2OH?

E - because you start with half a mole. Notice that there are six hydrogen ATOMS in the original molecule so it would be half of 6.

Reply:E. 3.0 moles

If you have 1.0 mol of CH3CH2OH, count the number of H and there would be 6.0 mol, but since you have 0.5 mol, then you have half of 6.0 mol.

Reply:The answer is E. 3. If there are 1/2 moles of ethanol, with 6 hydrogens, then there are 3 moles of H atoms. (1/2 X 6=3)

Reply:-For every one CH3CH2OH molecule there is

-6 H atoms

-thus the ratio of CH3CH2OH to H

-is 1 to 6

-thus 0.5 moles (6) = 3 moles of H

helps if you think of moles as a constant number eg. 10

it is a constant amount.

eg. If you have one moles of (cars) how many moles of (wheels) would there be?

ratio of (cars) to (wheels) is 1 to 4

therefore 4 moles of wheels

Reply:# of moles of H atoms in 1 mol of CH3CH2OH= 6 mol

# of moles of H atoms in 0.5 mol of CH3CH2OH=6*0.5

=3 mol

Therefore the answer is E

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