Question

13] Calculate the molecular masses of the following:
Molecular formulae: NaCl, MgCl2, KNO3, AICI3, MgO.
Atomic masses - Na-23, CI-35.5, Mg-24, K-39, N-14, 0-16 Al-27.​

Answer 1

Answer:

1) 58.5 g/mol (NaCl)

23+35.5=58.5 g/mol

2) 95.21 g/mol (MgCl2)

M (2Cl)+M (Mg) = 70.90+24.31=95.21 g/mol.

3) 101 g/mol (KNO3)

31+14+3*16 = 101 g/mol

4) 133.5 g/mol ( AlCl3)

27+3(35.5) = 133.5

5) 40 g/mol (MgO)

24 +16 = 40

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Answer 2

nacl. 1 58. 5 2. 95 c 101. d. 78

Explanation:

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