Calculate the mass % (m/m) NaCl of a solution made by dissolving 3.50 grams of N

Question

Calculate the mass % (m/m) NaCl of a solution made by dissolving 3.50 grams of NaCl in 50.00 grams of total solution. If a solution is 15% by mass NaCl, how many grams of solution are needed to obtain 36 grams of NaCl? Calculate the molarity of a solution made by dissolving 3.50 grams of NaCl in 50.00 mL of total solution If a solution is 2.50 M in C_12H_22O_11, how many moles of C_12H_22O_11 would be in 82.0 mL of solution? Calculate the (m/v) % NaCl of a solution made by diluting 25.0 ml of a 7.50 (m/v)% NaCl solution to a total volume of 75.00 mL. Fill in the blanks with the following terms: strong electrolyte, weak electrolyte, non-electrolyte a) ___ solute dissociates completely into ions when dissolved in water b) ___ solution consists of only molecules (no ions) c) ___ solution consists of tons and molecules d) __ is used in dissolution equations e) ____ solute does not dissociate into tons when dissolved in water f) _____ solution will conduct electricity well

Explanation / Answer

Q4.

find mass % of NaCl solution bu:

m = 3.5 g of NaCl

m = 50 g of total solution

so

% m/m of NaCl = mass of NACl / total mass * 100%

% m/m of NaCl = 3 / 50 * 100%

% m/m of NaCl = 6 %

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