The molecular mass of octane is 114.23g/mol and its density is 0.692 g/ml. how do i find the mass using the density?

mass=density×volume

Explanation:

You can use this formula and multiply the density by the volume to find the mass.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current