Relative Atomic Mass and Relative Molecular Mass (4)

Calculation of the relative molecular mass, RMM for K2Cr2O7

RMM bagi K2Cr2O7 = 2(RAM for K) + 2(RAM for Cr) + 7(RAM for O) = 2(39) + 2(52) + 7(16) = 294

Calculation of the relative molecular mass, RMM for Fe(NO3)3

RMM for Fe(NO3)3 = RAM for Fe + 3[RAM for N + 3(RAM for O)] = 56 + 3[14 + 3(16) = 242

Calculation of the relative molecular mass, RMM for CCl4

RMM for CCl4 = RAM for C + 4(RAM for Cl) = 12 + 4(35.5) = 154

Calculation of the relative molecular mass, RMM for CH3COOH

RMM for CH3COOH = RAM for C + 3(RAM for H) + RAM for C + RAM for O + RAM for H = 12 + 3(1) + 12 + 16 + 16 + 1 = 60

Calculation of the relative molecular mass, RMM for Br2

RMM for Br2 = 2(RAM for Br) = 2(80) = 160

Calculation of the relative molecular mass, RMM for CH4

RMM for CH4 = RAM for C + 4(RAM for H) = 12 + 4(1) = 16

Calculation of the relative molecular mass, RMM for C3H8

RMM for C3H8 = 3(RAM for C) + 8(RAM for H) = 3(12) + 8(1) = 44

Calculation of the relative molecular mass, RMM for C2H5OH

RMM for C2H5OH = 2(RAM for C) + 5(RAM for H) + RAM bagi O + RAM bagi H = 2(12) + 5(1) + 16 + 1 = 46

Calculation of the relative molecular mass, RMM for C6H1206

RMM for C6H1206 = 6(RAM for C) + 12(RAM for H) + 6(RAM for O) = 6(12) + 12(1) + 6(16) = 180

Calculation of the relative molecular mass, RMM for Ca(OH)2

RMM for Ca(OH)2 = RAM for Ca + 2(RAM for O) + 2(RAM for H) = 40 + 2(16) + 2(1) = 74