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6 November, 21:47

If it takes 450 J of energy to melt 5 g of a substance, how many joules would be needed to melt 15 g?

A. 9000 J

B. 6750 J

C. 2250 J

D. 1350 J

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Answers (1)
  1. 7 November, 00:55
    0
    D. 1350

    Explanation:

    Because 5*3=15 and 450*3=1350
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