February 2019 1 9 Report
Gas helium berada dalam tangki tertutup bervolume 500 cm³ pada tekanan 1,5x10^5 Pa. Jika atom-atom gas helium mempunyai energi kinetik rata-rata 2,5x10^-20 Joule. Maka banyaknya partkel gas di dalam tangki adalah...
a. 1x10^21
b. 2x10^21
c. 2,5x10^21
d. 4,5x10^21
e. 5,5x10^21
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