Question

How many moles of glucose (C6H12O6) are in 1.5 liters of a 4.5 M C6H12O6 solution?

4.5 moles
6.0 moles
6.8 moles
3.0 moles

Answer 1

If M is the molar concentration of
`C_6H_(12)O_6`, n is the number of moles and V is the volume of the solution:


`M=(n)/(V)\Longrightarrow 4.5=(n)/(1.5)\iff n=4.5*1.5\iff \boxed{n=6.75~moles}\\\\6.75\approx6.8\Longrightarrow Answer~C`