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Chemistry for Today: General, Organic, and Biochemistry
- How would you prepare from the solid and pure water (a) 0.400 L of 0.155 M Sr(OH)2? (b) 1.75 L of 0.333 M (NH4)2CO3?arrow_forwardCalcium carbonate, CaCO3, can be obtained in a very pure state. Standard solutions of calcium ion are usually prepared by dissolving calcium carbonate in acid. What mass of CaCO3 should be taken to prepare 500. mL of 0.0200 M calcium ion solution?arrow_forwardWhat volume of 0.250 M HCI is required to neutralize each of the following solutions? a. 25.0 mL of 0.103 M sodium hydroxide, NaOH b. 50.0 mL of 0.00501 M calcium hydroxide, Ca(OH)2 c. 20.0 mL of 0.226 M ammonia, NH3 d. 15.0 mL of 0.0991 M potassium hydroxide, KOHarrow_forward
- An experiment in a general chemistry laboratory calls for a 2.00-M solution of HCl. How many mL of 11.9 M HCl would be required to make 250 mL of 2.00 M HCl?arrow_forwardTwo liters of a 1.5 M solution of sodium hydroxide are needed for a laboratory experiment. A stock solution of 5.0 M NaOH is available. How is the desired solution prepared?arrow_forward3.63 How many moles of solute are present in each of these solutions? (a) 48.0 mL of 3.4 M H2SO4. (b) 1.43 mL of 5.8 M KNO3. (c) 321 L of 0.034M NH3 (d) 1.9 × 10-3 L of 1.4 × 10-5 M NaFarrow_forward
- Describe how you would prepare each solution. 1.00 L of 0.125-M Na2CO3 from solid Na2CO3 500. mL of 0.0215-M KMnO4 from solid KMnO4arrow_forwardFollow the directions for Question 9 for the following pairs of solutions. (a) sodium phosphate and barium chloride (b) zinc sulfate and potassium hydroxide (c) ammonium sulfate and sodium chloride (d) cobalt(III) nitrate and sodium phosphatearrow_forwardClassify the following solutions as unsaturated, saturated, or supersaturated: a.A solution to which a small piece of solute is added, and it dissolves. b.A solution to which a small piece of solute is added, and much more solute comes out of solution. c.The final solution resulting from the process in part b.arrow_forward
- Vitamin C has the formula C6H8O6. Besides being an acid, it is a reducing agent. One method for determining the amount of vitamin C in a sample is to titrate it with a solution of bromine, Br2, an oxidizing agent. C6H8O6(aq) + Br2(aq) 2 HBr(aq) + C6H6O6(aq) A 1.00-g "chewable" vitamin C tablet requires 27.85 ml of 0.102 M Br2 for titration to the equivalence point. What is the mass of vitamin C in the tablet?arrow_forwardWhen solutions of BaCl2 and Na2SO4 are mixed, the mixture becomes cloudy. After a few days, a white solid is observed on the bottom of the beaker with a clear liquid above it. (a) Write a balanced equation for the reaction that occurs. (b) Why is the solution cloudy at first? (c) What happens during the few days of waiting?arrow_forwardDescribe in words how you would prepare pure crystalline AgCl and NaNO3 from solid AgNO3 and solid NaCl.arrow_forward
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