Mn - mangan (55 u)
S - siarka (32 u)
1 * Mn + 1 * S =
= 1 * 55 u + 1 * 32 u =
= 55 u + 32 u =
= 87 u
N - azot (14 u)
O - tlen (16 u)
2 * N + 5 * O =
= 2 * 14 u + 5 * 16 u =
= 28 u + 80 u =
= 108 u
H - azot (14 u)
C - węgiel (12 u)
O - tlen (16 u)
2 * H + 1 * C + 3 * O =
= 2 * 14 u + 1 * 12 u + 3 * 16 u =
= 28 u + 12 u + 48 u =
= 40 u + 48 u =
= 88 u