How do you convert 7.5 x 10^4 j into kilojoules?

The prefix ##k## (kilo) means 1000.

So, just like you convert grams into kilograms by diving by 1000:

##7.5*10^4J=7.5*10000J=75000J##

##75cancel(000)cancelJ*(1kJ)/(1cancel(000)cancelJ)=75kJ##

Leave a Reply

Your email address will not be published. Required fields are marked *