15 g of potassium chlorate are dissolved in water to produce 250 mL of solution. What...
7.920 g of potassium oxalate is dissolved in water to make 450.0 mL of solution. What is the molarity of the potassium oxalate solution ?
13.4 g of magnesium chloride is dissolved in 250. mL of water. What is the molarity of the solution? Round your final answer to three significant figures.
6: Suppose 50.0 g of pure potassium hydroxide is dissolved in 250.00 mL water ( Solvent: -0.9987 g/mL). Given the density of the solution is 1.020 g/mL, what will be the molarity of the solution. (Hint: You need to find the volume of the solution)
Suppose 29.0 g of zinc iodide is dissolved in 250 mL of a 0.60 Maqueous solution of potassium carbonate. Calculate the final molarity of iodide anion in the solution. You can assume the volume of the solution doesn't change when the zinc iodide is dissolved in it. Be sure your answek has the correct number of significant digits. X 5 ?
If 0.2997 g of potassium iodate (KIO3) are dissolved in 25.00 mL of distilled water, what is the resulting molarity (M)? Give a brief explanation about why this is a very precise concentration to use. In other words, what makes potassium iodate such a good reagent with which to work in lab?
25.00 g of potassium hydrogen phosphate (K HPO4) is dissolved in enough water to make 125.0 mL of a solution with a density of 1.22 g/mL. What is the concentration of the solution in % (m/m). % (m/v). molarity, mosM and mEq/L of the potassium ion? Note: K2HPO4 has a molar mass of 174.2g/mole. What would be the final molarity of the above solution if you were to dilute it by adding 175 mL of water?
35 g of Na2CO3 is dissolved in 150 mL of water to produce a solution with a total volume of 157.2 mL. If the water is at 33∘C, what would be the freezing point of this solution (in ∘C)
20.5 g of chromic acid are dissolved in a 250 mL volumetric flask. a) what is the concentration of the solution? b) If 10.1 mL of the solution in a) is diluted with 75.5 mL of water, what is the resulting concentration? c) If 20.5 mL of the chromic acid solution in a) are titrated with 25.0 mL of sodium hydroxide solution, what is the molarity of the NaOH solution? (need balanced equation)
20.5 g of chromic acid are dissolved in a 250 mL volumetric flask. a) what is the concentration of the solution? b) If 10.1 mL of the solution in a) is diluted with 75.5 mL of water, what is the resulting concentration? c) If 20.5 mL of the chromic acid solution in a) are titrated with 25.0 mL of sodium hydroxide solution, what is the molarity of the NaOH solution? (need balanced equation)
Suppose 16.6g of nickel(II) iodide is dissolved in 250.mL of a 0.80M aqueous solution of potassium carbonate. Calculate the final molarity of nickel(II) cation in the solution. You can assume the volume of the solution doesn't change when the nickel(II) iodide is dissolved in it. Be sure your answer has the correct number of significant digits.