ANSWER:
0.427 BTU
2.8*10^21 eV
4.5*10^10 erg
107.55 cal
331.9 ft-lbs
Explanation:
We have 450 J, to convert it to other units you must know the conversion factor in each case, like this:
J into BTU
J into eV
J into erg
J into cal
J into ft-lbs
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