Question

5. Write the names of the following
compounds and deduce their
molecular masses.
Na SO, K, CO, CO, MgCl, NaOH,
AIPO, NaHCO

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Answer 1

Answer:

Write the names of the following compounds and deduce their molecular masses.

Na2SO4, K2CO3, CO2, MgCl2, NaOH, AlPO4, NaHCO3

SOLUTION

a. Na2SO4 - Sodium sulphate

Molecular mass= sum of masses of individual components

2 (23) + 32 + 4 (16)= 142g

b. K2CO3 - Potassium carbonate

2 (39) + 12 + 3 (16) = 138g

c. CO2 - Carbon dioxide

12 + 2 (16) = 44g

d. MgCl2 - Magnesium chloride

24 + 2 (35.5) = 95g

e. NaOH - Sodium hydroxide

23 + 16 + 1 = 40g

f. AlPO4 - Aluminium phosphate

27 + 31 + 4 (16) = 122g

g. NaHCO3 - Sodium bicarbonate

23 + 1 + 12 + 3 (16) = 84g

Answer 2

Answer:

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Explanation:

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