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Many chromate (CrO42-) salts are insoluble, and most have brilliant colors that have led to their being used as pigments. Write balanced net ionic equations for the reactions of Co3+ and Cu2+ with chromate ion. (Use the lowest possible coefficients. Omit states-of-matter in your answer.)
A) Co3+ + CrO42- (Superscript 3+, superscript 2-, subscript 4)B) Cu2+ + CrO42- (Superscript 2+, superscript 2-, subscript 4)
At -11.0 °C (a common temperature for household freezers), what is the maximum mass of sorbitol (C6H14O6) you can add to 2.50 kg of pure water and still have the solution freeze? Assume that sorbitol is a molecular solid and does not ionize when i..
Calculate the heats of combustion for the following reactions from the standard enthalpies of formations listed in appendix 3: (a) 2H2(g) + O2(g) = 2H2O(l) (b) 2C2H2(g) + 5O2(g) = 4CO2(g) + 2H2O(l)
the concentration of cholesterol in the blood serum of a normal adult is approx 200mgdl. how many grams of cholesterol
Calculate weight percent of Fe in ore with .4919g of sample with 11ml of .25M Sn2Cl (56.5010g) and 10mL of .25M Hg2Cl (67.8644g) as analyte titrating 1.0058g of potassium dichromate diluting with water
The reaction will become more spontaneous. B) The spontaneity of the reaction will not change. C) The reaction will become less spontaneous. D) ?G will decrease. E) K will decrease.
What is the concentraion of toulene in this sample? Does this exceed the standard? (maximum contaminant level is 1.0 mg/L 6) How much calcium nitrate has to be added to 1000L of solution to provide 130ppm Ca^2+ if the water supply contains 40ppm Ca..
for the following reaction 22.5 grams of calcium hydroxide are allowed to react with with 27.0 grams of hydrochloric
an unknown molecule contains only iodine and fluorine and it is 57.2 i by mass. what is the electron domain geometry of
Lethality of Carbon Monoxide, Sulfur Dioxide and TNT Air monitoring provides the following contaminant concentrations at the approximate center of a fire scene in which acres of automobile tires are burning:
The partial pressure of O2 in air at sea level is 0.21 atm. The solubility of O2 is 1.38E-3 at 1 atm. Use Henry's law to calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20°C and an atmospheric ..
The unknown compound assigned to a student was an aldehyde, but about half of the sample distilled around 65, and the rest of it distilled near 155?. (a) What is the name of the aldehyde. (b) What else was in the sample and why. Write a balanced e..
Equal volumes of 1 x 10-5 M solutions of Cd2+ and CO32- ions are mixed in one flask and equal volumes of 1 x 10-5 M solutions of Ag+ and CrO42- ions are mixed in a second. Which substances precipitate given that the Ksp values of CdCO3 and Ag2CrO4..
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