SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0.625 g NaCl
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36.52 g NaCl
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36.5 g NaCl
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0.625 mol NaCl
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Detailed explanation-1: -The amount of solute will dissolve in 125mL of the solution-36.53g. Solution: To find the amount of solute in 125 mL of NaCl we need to find the amount of solute the will dissolve in 1 liter. = 36.53g.
Detailed explanation-2: -grams of solute = (wt% solution) x (ml of water) ÷ (100 – wt% solution)
Detailed explanation-3: -Answer and Explanation: 12% NaCl solution means 12g of NaCl is dissolved in 100 mL solution.
Detailed explanation-4: -What is the molarity of a solution which contains 58.5 g of sodium chloride dissolved in . 500 L of solution? Molarity=moles/volume, 58.5 g of NaCl equals 1 mole, so Molarity=1/. 5, which is 2.
Detailed explanation-5: -We multiply 2.5 g NaCl by the conversion factor of 1 mole NaCl over the formula weight of NaCl, 58.5 g. That tells us that we have 0.0427 mole of NaCl. Now that we know the moles we can calculate the molarity. Moles of solute (0.0427) divided by the volume of the solution (0.125 L) gives us 0.34 M NaCl.