What is the concentration of sugar (C12H22O11) in mol L–1 if its 20 g are dissolved in enough water to make a final volume up to 2 L?
Mass of sugar= 20g
Molecular mass of sugar=12x12 +1x22 +16x11=342 g
Mass of water= 2 liter
Molarity (M) = number of moles of solute/volume of solution in liters
= 20/(342x2) =0.02924 mol/liter
Therefore Molar concentration of sugar = 0.03 mol L–1
Following results are observed when sodium metal is irradiated with different wavelengths.
Calculate (a) threshold wavelength and, (b) Planck’s constant.
λ (nm) | 500 | 450 |
400 |
v × 10–5 (cm s–1) | 2.55 | 4.35 | 5.35 |
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Welcome to the NCERT Solutions for Class 11 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 11: What is the concentration of sugar (C12H22O11) in mol L–1 if its 20 g are dissolved in enough ....
Comments
Perfect
Nice ans
Good answer
v.v. good answer
Ans is 0.03 why you write 0.02924 in answer
Good
Why no of moles of solute is the mass here
The great
Good answer