Write the formulae for the following and calculate the molecular mass for each one of them. (a) Caustic potash (b) Baking powder (c) Lime stone (d) Caustic soda (e) Ethanol Common salt
ScienceClass 9CBSEAnswered 27 Mar 2026
Answer
- Soln:
The formulae for the following and calculate the molecular mass for each one of them.
|
Sl No |
Compound |
Formula |
Molecular mass |
|
A |
Caustic Potash |
KOH |
39+16+1=56u |
|
B |
Baking powder |
NaHCO3 |
23+1+12+3x16+84u |
|
C |
Lime stone |
CaCO3 |
40+12+3x16+100u |
|
D |
Caustic soda |
NaOH |
23+16+1+40u |
|
E |
Ethanol |
C2H5OH |
2x2+5x1+16+1+46u |
|
F |
Common Salt |
NaCl |
23+35.5=58.5 |
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