Question

the molecular mass of x is 106 x can be

Answer 1

According to me, X could be Na2CO3.

Answer 2

The question is incomplete, here is the complete question:

The molecular mass of x is 106, x can be:

A.) Na₂CO₃     (B) CaCO₃       (C)  NaCl      (D) C₂H₅OH

The compound X having molar mass 106 g/mol is $Na_2CO_3$

Explanation:

Molecular mass is defined as the mass which is calculated by the addition of masses of respective elements, each multiplying by its number of atoms.

For the given options:

Option A:  $Na_2CO_3$

Molar mass of sodium carbonate = $(2\times 23)+(1\times 12)+(3\times 16)]=106g/mol$

Option B:  $CaCO_3$

Molar mass of calcium carbonate = $(1\times 40)+(1\times 12)+(3\times 16)]=100g/mol$

Option C:  NaCl

Molar mass of sodium chloride = $(1\times 23)+(1\times 35.5)]=58.5g/mol$

Option D:  $C_2H_5OH$

Molar mass of ethanol = $(2\times 12)+(6\times 1)+(1\times 16)]=46g/mol$

Learn more about molar mass:

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