Molekul Relatif
Ingatt bahwa Ar H = 1
Ar N = 14
Ar C = 12
Ar O = 16
1. Mr NH3 = Ar N + 3× Ar H
= 14 + 3 ×1
= 17
2. Mr CO2 = Ar C + 2 × Ar O
= 12 + 2 (16)
= 12 + 32 = 44
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Molekul Relatif
Ingatt bahwa Ar H = 1
Ar N = 14
Ar C = 12
Ar O = 16
Penyelesaian
1. Mr NH3 = Ar N + 3× Ar H
= 14 + 3 ×1
= 17
2. Mr CO2 = Ar C + 2 × Ar O
= 12 + 2 (16)
= 12 + 32 = 44