Hitunglah banyaknya mol dari: a. 8 gram H2 (Ar H = 1) b. 800 gram CaCO3 (Ar Ca = 40, C = 12, dan O = 16) c. 232 gram Mg(OH)2 (Ar Mg = 24, O = 16, dan H = 1) d.
Biologi
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Pertanyaan
Hitunglah banyaknya mol dari:
a. 8 gram H2 (Ar H = 1)
b. 800 gram CaCO3 (Ar Ca = 40, C = 12, dan O = 16)
c. 232 gram Mg(OH)2 (Ar Mg = 24, O = 16, dan H = 1)
d. 158 gram KMnO4 (Ar K = 39, Mn = 55, dan O = 16)
e. 478 gram CHCl3 (Ar C = 12, H = 1, dan Cl = 35,5)
a. 8 gram H2 (Ar H = 1)
b. 800 gram CaCO3 (Ar Ca = 40, C = 12, dan O = 16)
c. 232 gram Mg(OH)2 (Ar Mg = 24, O = 16, dan H = 1)
d. 158 gram KMnO4 (Ar K = 39, Mn = 55, dan O = 16)
e. 478 gram CHCl3 (Ar C = 12, H = 1, dan Cl = 35,5)
1 Jawaban
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1. Jawaban kekeangelica
rumus mol = gr/Mr
maka:
a. H2 -> 8/(1 x 2) = 4
b. CaCO3 -> 800/(40+12+16x3) = (hitung sendiri)
c. Mg(OH)2 -> 232/(24+16x2+1x2) = (hitung sendiri)
d. KMnO4 -> 158/(39+55+15x4)
e. CHCl3 -> 478/(12+1+3x35.5)