You are given a 1.25 gram mixture of calcium nitrate and calcium chloride. You dissolve this mixture in 200 mL of water and add an excess of 0.300 M silver nitrate. You collect and dry the white precipitate which forms and find it has a mass of 0.405 grams. Calculate the percent calcium chloride by mass in the original mixture.
You are given a 1.25 gram mixture of calcium nitrate and calcium chloride. You dissolve this...
You need to dissolve CaCl2 in water to make a mixture that is 39.5% calcium chloride by mass. If the total mass of the mixture is 113.0 g, what masses of CaCl2 and water should be used? Mass of CaCl2 Mass of water
You need to dissolve CaC2 in water to make a mixture that is 32.5% calcium chloride by mass. If the total mass of the mixture is 586.2g, what masses of CaCh and water should be used? Mass of CaCh Number g CaCl, Mass of water Number g H,0
A mixture consisting of only iron(III) chloride (FeCl3) and aluminum chloride (AlCl3) weighs 1.0397 g. When the mixture is dissolved in water and an excess of silver nitrate is added, all the chloride ions associated with the original mixture are precipitated as insoluble silver chloride (AgCl). The mass of the silver chloride is found to be 3.0178 g. Calculate the mass percentages of iron(III) chloride and aluminum chloride in the original mixture. Mass percent FeCl3 = % Mass percent AlCl3...
a) In the laboratory you dissolve 12.4 g of
lead nitrate in a volumetric flask and add water
to a total volume of 500 . mL.
What is the molarity of the solution? _____M
b)How many grams of Cu(OH)2 will
precipitate when excess KOH solution is added to
43.0 mL of 0.579 M
CuSO4 solution?
CuSO4(aq) +
2KOH(aq) Cu(OH)2(s)
+ K2SO4(aq)
a mixture is created of 306.0 grams of sodium nitrate, NaNO3, and 500 gram of water,H2O, at 20 celcius . The density of the mixture is 1.30 G/ML. EXPRESS THE concentration of sodium nitrate as mass percent, molarity, molality, and mole fraction. Determine the freezing point, boiling point and osmotic pressure of the solution
In the laboratory you dissolve 24.3 g of calcium chloride in a volumetric flask and add water to a total volume of 125 mL. What is the molarity of the solution? M. What is the concentration of the calcium cation? M. What is the concentration of the chloride anion? M
total volume of 500 . mL In the laboratory you dissolve 18.1 g of ammonium phosphate in a volumetric flask and add water to What is the molarity of the solution? M How many milliliters of an aqueous solution of 0.137 M calcium chloride is needed to obtain 18.1 grams of the salt? mL You need to make an aqueous solution of 0.232 M aluminum nitrate for an experiment in lab, using a 125 mL volumetric flask. How much solid...
1. A 0.4187 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 0.9536 g. What is the mass percentage of chlorine in the original compound? ________% 2. A student determines the calcium content of a solution by first precipitating it as calcium hydroxide, and then decomposing the hydroxide...
You obtain an unknown with an approximate chloride mass% of 51%. Calculate the volume (in mL) of 0.29M silver nitrate you need to add to 0.2915 grams of unknown to ensure full precipitation. Your calculation should assume that you add 28% excess silver nitrate. Give the answer with the appropriate number of significant figures and the correct units. Silver nitrate molar mass: 169.87 g/mol Chloride molar mass: 35.45 g/mol
You mix a 25.0 mL sample of a 20 M potassium chloride solution with 20.0 mL of a 0.900 M lead(II) nitrate solution, and this precipitation reaction occurs: (5 pts) 2KCl (aq) + Pb(NO3)2 (aq) ® PbCl2 (s) + 2KNO3 (aq) You mix a 25.0 mL sample of a 20 M potassium chloride solution with 20.0 mL of a 0.900 M lead(II) nitrate solution, and this precipitation reaction occurs: (5 pts) 2KCl (aq) + Pb(NO3)2 (aq) ® PbCl2 (s) +...