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Mass percent of a solution

This type of question, asked 2 times: 11 Apr 2023, 8 Apr 2024. All 3 questions below, oldest first.

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  1. Question 1

    11 Apr 2023

    134
    A solution is prepared by adding 2g2g of " XX " to 1 mole of water. Mass percent of " XX " in the solution is:

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  2. Question 2

    11 Apr 2023

    57
    A solution of sugar is obtained by mixing 200 g200\text{ }g of its 25%25\% solution and 500 g500\text{ }g of its 40%40\% solution (both by mass). The mass percentage of the resulting sugar solution is______ (Nearest integer)

  3. Question 3

    8 Apr 2024

    150
    A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is ______ (Integer Answer) (Given: Molar mass in gmol−1gmol^{- 1} Ethyl alcohol: 46, water: 18)