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Selasa, 26 Februari 2013

SOAL REMIDI KIMIA X5 -X9



SOAL REMIDI KIMIA KELAS X 5 – X 9  TENTANG  KONSEP MOL
1.      Hitunglah :
a.      Jumlah atom dalam 15 mol alumunium ( Al)
b.      Jumlah molekul dalam 0,5 mol karbon dioksida (CO2)
c.      Jumlah atom dalam 5 mol air ( H2O)
2.      Berapa  gram massa dari 5 mol gas metana ( CH4)
3.      Hitunglah mol dari 16 gram belerang (S)
4.      Berapa Ar kalsium jika 0,2 mol kalsium mempunysi massa 8 gram ?
5.      Berapa mol dari 4,5 x 1023 atom Mg ?
Diketahui Ar :  Mg = 24     Ca = 40      H= 1       C = 12   O = 16       Al= 27        S = 32
 Bilangan Avogadro = 6 x 1023


( UNTUK YANG REMIDI SEGERA DIKERJAKAN DI KERTAS ULANGAN DAN DIKUMPULKAN )

Rabu, 20 Februari 2013

UN BIO PAKET B 2011-2012

soal un biologi 2011 - 2012 paket a

MEMBUAT BATERAI DARI BUAH