Question

The molecular mass of X is 106. X can be
(i) CaCO3
(ii) SO3
(iii) Na2CO3
(iv) NaCl

Answer 1

Answer:

1}40+12+48=100

2)32+48=80

3)23*2+12+48=106

4)23+35.5=58.5

Option c is correct

Mark as brainliest please

Answer 2

X can be Na2CO3 as the molecular mass of Na2CO3 is approximately 106.

* Molecular mass refers to a sum of the atomic masses of all the atoms present in a given molecule.

* The molecular masses of the given compounds are:

[ The atomic masses are mostly in decimals so we take the rounded up value for each]

1. CaCO3 = 40+ 12+ (16*3) = 100

2. SO3 = 32+( 16*3) = 80

3. Na2CO3 = (23*2)+ 12+ (16*3) = 106

4. NaCl = 23+35 = 58

So as observed, the molecular mass of Na2CO3 is 106.