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

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