6) What is the mass percent of an ammonium carbonate solution prepared by dissolving 33.2 grams...
QUESTION 8 What is the mass percent of a solution prepared by dissolving 18.9 grams of solid into 39.5 grams of water? OA) 47.8% O B) 58.4% C) 32.4% OD) The identity of the compound must be known. E) none of the above QUESTION 9 1 points What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NO3)2 into 355 ml of water? A) 0.331 M B) 0.932 M C) 0.117 M D) 1.99 M E) none...
Molar Concentrations What is the molar concentration of an ammonium carbonate solution made by dissolving 1.460 grams of ammonium carbonate in enough water to create 100.0 mL of total solution? M ammonium carbonate?
7. What is the mass percent of sodium acetate in a solution prepared by dissolving 25.0 g of sodium acetate in 150.0 g of water? A. 0.167 % B. 83.3% C. 16.7 % D. 0.143 % E. 14.3 %
what is the mass percent NaCI of a solution prepared by dissolving 25.80g of NaCI in 125.00g of water
Section: Name: Laboratory Questions: Solution Stoichiometry A solution is prepared by dissolving 3.7500 grams iron(III) oxalate in enough water to make 125.00 mL of solution. 1. What is the molar concentration of iron(III) oxalate in this solution? a. b. What is the molar concentration of oxalate ions in this solution? . Describe how prepare 250.00 mL of 0.150 M ammonium ion solution beginning with would you solid ammonium phosphate, (NH), PO
What is the percent by mass of ammonium chloride, NH4Cl solution made by dissolving 26.5 g of NH4Cl, in 75.0 g of water, H20? O 73.9% O 0.67% O 0.49% O 35.3% O 26.1%
a solution was prepared by dissolving 27.0 g KOH in 100 g water. A) what is mole fraction of KOH in solution? B) what is mass percent?C) what is the molality? 2. A solution was prepared by dissolving 27.0 g KOH(s)in 100.0 g water. You may use the chart below if you find usefiul to answer questions a) -e) MW (g/mol Mass ()moles 56.1 H20 18.0 Solution (a) What is the mole fraction of KOH in the solution? (5 pts...
A solution was prepared by dissolving 1.846 grams of an unknown compound (nonelectrolyte) in 15.75 grams of water (Kf = 1.86 oC/m). The solution freezes at -1.50 oC. If pure water freezes at 0.00 oC, what's the molar mass of unknown compound?
An aqueous solution is to be prepared that will be 5.25% by mass ammonium nitrate. What mass of NH4NO3 and what mass of water will be needed to prepare 1.21 kg of the solution? Mass = g NH4NO3 Mass g water A sample of an iron alloy contains 89.6 g Fe, 2.17 g C, and 1.58 g Cr. Calculate the percent by mass of each component present in the alloy sample. % Fe %C % Cr
1. A solution is created by dissolving 12.5 grams of ammonium chloride in enough water to make 215 mL of solution. How many moles of ammonium chloride are present in the resulting solution? 2. When thinking about the amount of solute present in a solution, chemists report the concentration or molarity of the solution. Molarity is calculated as moles of solute per liter of solution. What is the molarity of the solution described above? 3. To carry out a particular...