To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.900 ppm fluoride, F−. How many grams of F− must be added to a cylindrical water reservoir having a diameter of 4.12×10^2 m and a depth of 76.72 m?

Q: Calculating ion molarity using solute mass A chemist prepares a solution of magnesium bromide…

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Q: At a certain temperature, an aqueous solution is 16.5% K2CO3 by mass and has a density of 1.149…

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Q: A chemistry student weighs out 0.157g of lactic acid HC3H5O3 into a 250.mL volumetric flask and…

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Q: Suppose 3.32 g of nickel(II) iodide is dissolved in 200. mL of a 0.30 M aqueous solution of…

A: The equation is,

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Q: An aqueous solution of sodium hydroxide, NaOH , is made by dissolving 15.6 grams of sodium hydroxide…

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Q: A chemical analysis shows that a sample contains 250.0 micrograms ofUranium in 4.00 x 10 4 grams of…

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Q: Suppose 0.190 g of lead(II) acetate is dissolved in 350. mL of a 41.0 m M aqueous solution of…

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Q: 42.0 mL of 0.170 M NaOH and 37.6 mL of 0.420 M NaOH. Assume that the volumes are additive. Enter…

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Q: An aqueous solution of manganese (II) iodide,MnI2,is made by dissolving 21.1 grams of manganese(II)…

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Q: What are the qualitative and quantitative approaches to measure densities, respectively? In air, the…

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Q: A 5.000 g of metal ore is dissolved in 20.000 mL of acid (density 1.840 g/mL). The mass of the…

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Q: If 0.42 mg calcium fluoride, CaF2 is used as above to add fuoride to the drinking water, does CaFz…

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Q: Suppose 13.8 g of potassium bromide is dissolved in 300. mL of a 0.30 Maqueous solution of silver…

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Q: 3.45 mol of LiCl in 3.53 L of solution Express the molarity in moles per liter to three significant…

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Q: If 16.0 mL of water are added to 31.5 mL of 0.586 M Ba(OH)2Ba(OH)2 (aq), what is the new solution…

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Q: What mass in grams (g) of C12H22O11 (sucrose) (MM=342.30 g/mol ) is needed to prepare 227.5 mL of a…

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Q: Part B A student placed 12.5 g of glucose (C¢H12O6) in a volumetric flask, added enough water to…

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Q: A solution is prepared by dissolving 72.91 g of CdCl2 (MM = 183.317) in enough water to make 158.95…

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Q: Give an example of a mixture in which solute is solid and solvent is liquid.

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Q: A chemist prepares a solution of vanadiumIII bromide VBr3 by measuring out 0.50g of VBr3 into a…

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Q: An aqueous stock solution is 72.0% HNO3 by mass and its density is 1.42 g/mL. What volume of this…

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Q: About measures: choose only the correct alternative(s). Choose one or more: a) 10.0 g of ascorbic…

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Q: 4) Write a chemical equation describing the dissolution of Ba(NO3)2 in water. To give you an example…

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