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There are two numericals,

1. Density of Methanol is 0.793 kg/l. Find molarity. ANSWER is : Desity/ Molar mass = Molarity

In other numerical

2. Concentration of H2SO4 is 98% by mass having density of 1.84gm/ml. Calculate Molarity.

here they used another formula.

1. Density of Methanol is 0.793 kg/l. Find molarity. ANSWER is : Desity/ Molar mass = Molarity

**(UNDERSTANDABLE)**In other numerical

2. Concentration of H2SO4 is 98% by mass having density of 1.84gm/ml. Calculate Molarity.

here they used another formula.

**now my question is, How second question is different from First ? why didnt they took density and devided it by Molar mass to get molarity?**

What I am missing?What I am missing?

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