How to convert molecular weight from g/mol to lb/mol ????

Question

Henry Antrim · Accepted Answer

Why would you want to do so?

Well, there are #454*g*lb^-1#..and so were we to convert the atomic mass of say #""^12C#...we would take the quotient... #(12.00*g*mol^-1)/(454*g*lb^-1)-=0.0264*lb*mol^-1#.. And note the dimensional consistency of this quotient....: #(cancelg*mol^-1)/(cancelg*lb^-1)=(mol^-1)/(lb^-1)=(mol^-1)/(1/(lb))=lb*mol^-1# as required.... ...but if you want to use #lbs#, why not #"stone"-=14*lbs#, or even better, #"hundredweight"-=112*lb#

Henry Antrim · Answer

#1 \ "g/mol"~~2.2*10^-3 \ "lbs/mol"#

Weird conversion... Anyways, I'll attempt to solve it.

We know that #1 \ "kg"~~2.2 \ "lbs"#, and #1 \ "kg"=1000 \ "g"#.

#:. 1000 \ "g"~~2.2 \ "lbs"#

#1 \ "g"~~(2.2 \ "lbs")/1000#

#1 \ "g"~~0.0022 \ "lbs"#

So, #1 \ "g/mol"~~0.0022 \ "lbs/mol"#.

We can write this another way using scientific notation, it'll be

#1 \ "g/mol"~~2.2*10^-3 \ "lbs/mol"#.

Cooper Anderson · Answer

undefined To convert molecular weight from grams per mole (g/mol) to pounds per mole (lb/mol), you can use the following conversion factor:

1 gram (g) = 0.00220462 pounds (lb)

So, to convert from g/mol to lb/mol, you would multiply the molecular weight in g/mol by the conversion factor:

$$ \text{Molecular weight in lb/mol} = \text{Molecular weight in g/mol} \times 0.00220462 $$

Simply multiply the molecular weight in g/mol by 0.00220462 to obtain the molecular weight in lb/mol.