6x10的6次方吨的煤完全燃烧放出的热量是 (煤炭的热值为2.9x10的7次方J/Kg)
人气:244 ℃ 时间:2019-08-18 08:25:02
解答
m=6×10^6T=6×10^9kg
Q=qm=2.9x10^7×6×10^9=4.64×10^17(J)
答:略.
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