Question

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

Answer 1

$\: \: \: \: 7.5 \times {10}^{4} J \\ = \frac{7.5 \times {10}^{4} }{ {10}^{3} } \: kJ \\ = 7.5 \times 10 \: kJ \\ = 75 \: kJ$