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Calculate the weight of sugar that must be dissolved in 400 dcm3 of water to prepare 0.05 molar solution.?

M.wt of sugar : C₁₂H₂₂O₁₁

                             = 12 x 12 + 22 x 1 + 11 x 16

                             = 144 + 22 + 176

                             = 342 gm/L

Volume : 400 cm³

1cm³ = 1ml

.^.. 400cm³ = 400 ml = 0.4 L.