Question 13 Select the molarity of the solution prepared by dissolving 1.62 moles of NaBr in...
Question 10 The % concentration by mass of a solution prepared by dissolving 9.44 g of KF in 85.3 g of solution is: Selected Answer: 11.1% Correct Answer: 11.1% Response Feedback: Correct! Question 11 Select the amount of NaBr, in grams, needed to prepare 325. grams of a 3.62% by mass NaBr solution: Selected Answer: 3.25 grams Correct Answer: 11.8 grams Response Feedback: Incorrect! Percent by mass is the grams of solute dissolved per 100 g of solution: [C# grams...
The molarity of a solution prepared by dissolving 0.425 moles KI in 250. mL of solution: 0.0588 M 0.106 M 1.70 M 5.88 M
1. (p) What is the molarity of the solution that was prepared by dissolving 5.5 moles of H2SO4 to a final volume of 25 L? (Conversions with Molarity 101) 2. (IP) How many moles of potassium nitrate are in 250 mL of 0.45 M solution? (Conversions with Molarity 101) 3. (1 p) How many grams of sodium sulfate are in 500 mL of a 0.15 M solution? (Conversions with Molarity 101)
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving 41.5 g of potassium iodide (KI; Molar Mass = 166.0 g/mole) in enough water to make 2,500.0 mL of solution? (5 points]
QUESTION 7 What is the molarity of a solution prepared by dissolving 1453 g of lactose (C12H2011) in 2890 mL of water? Molanity- moles of solute L solution Number of moles mass of compound molar mass 5 points) A. Moles lactose B. Molarity:
1.) What is the molarity of a potassium hydroxide solution prepared by dissolving 2.74 g KOH in 4.2 mL of water? 2.) How many grams of sodium hydroxide are delivered by 6.8 mL of a 10 % solution in water? 3.) Hydrogen chloride (a gas) is dissolved into water to create hydrochloric acid, and therefore is a solution. Commercially available concentrated hydrochloric acid is sold as a 35 - 37 % solution. What molarity does this equate to? 4.) How...
What is the molarity of the solution that is prepared by dissolving 15 mL bromine in enough acetic acid to make 100.0 mL of solution? (molar mass of Br2 = 159.81 g/mole; density 3.12 g/mL)?
it makes Question 3 What is the molarity of a solution prepared by dissolving 7.98g NaCl in enough water to produce 1126 mL of solution? Your answer must have the correct number of significant figures but do NOT include the units. An example is 4.58 « Previous Quiz saved at 7:24pm
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...
Question 17 A solution is prepared by dissolving 45 g sodium carbonate, Na2CO3, in enough water to make 200 mL of solution. If the density of the solution is 1.1094 g/mL, what is the % mass of the solution? Question 18 Calculate the molarity of a 4.628 m solution of Sr(NO3)2 in H2O. The density of this solution is 1 g/mL Include units. Question 19 What is the molarity of a sodium chloride solution prepared by diluting 2.1 mL of...