Hitunglah banyaknya mol dari :
A. 8 gram H_2 (Ar H=1)
B. 800 gram CaCO_3 (Ar Ca=40, C=12, O=16)
C. 232 gram Mg(OH)_2 (Ar Mg=24, O=16, H=1)
D. 158 gram KMnO_4 (Ar K=39, Mn=55, O=16)
E. 478 gram CHCl_3 (Ar C=12, H=1, Cl=35,5)

2

Jawabanmu

2014-04-29T19:17:03+07:00
A . 8/2 = 4
b. 800/100 = 8
c. 232/58 = 4
d. 158/158 = 1
e. 478/119.5 = 4
2014-04-29T22:00:09+07:00
A. n = gr / Mr
   n = 8 / 2 = 4 mol

B. n = gr / Mr
     n = 800 / 100
     n = 8 mol

C. n = gr / Mr
     n = 232 / 58 = 4 mol

D. n = gr / Mr
     n = 158 / 158
     n = 1 mol

E. n = gr / Mr
     n = 478 / 119,5
     n = 4 mol