February 2019 1 105 Report
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1) hitunglah jumlah mol yg terkandung dalam
a) 3,01 x 10 molekul co2
b) 22 gram O2 (ArC=12,0=16)

2) hitunglah jumlah molekul NH3 yg terkandung dalam
a) 0,1 mol NH
b) 1,7 gram NH3 (ArN=14, 11 =1 )

3) Berapa gram massa dari sejumlah zat betikut
a) 0,2 mol CO (NH2)
b) 1,204 x 10 pangkat 23 molekul Co (NH2)3
(ArC= 12, O=16, N=14, H=1)
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