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Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Ksp = 7.9 x 10-16. (a) pH 7.0 M (b) pH 11.0 M (c) pH 13.6 M
Suppose four weighings of a crcucible were found to be 10.231 g, 10.278 g, 10.256 g, and 10.363. Obtain the average (mean) weight of the crucible
How many grams of silica were in a 6.00 grams sample, if it took 34.1 mL of 0.95 M HCl to react with all of calcium carbonate
HCL is a significant component of gastric juice. what is the concentration of chloride ion in gastric juice at pH=1.27?
A 55.0 mL solution of 0.155 M iron (III) perchlorate is prepared. This solution is then titrated with 27.6 mL of 0.250 M potassium hydroxide. What is the concentration of iron (III) perchlorate that remains in the solution
The Henry's Law constant of methyl bromide, CH3Br, is k = 0.159 mol/(L • atm) at 25°C. What is the solubility of methyl bromide in water at 25°C and at a partial pressure of 250. mm Hg?
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acididc, basic, or neutral?
suppose 2.8 moles of methane are allowed to react with 5 moles of oxygen? what is the limiting reagent?How many moles of CO2 can be made from this mixture? How many grams of CO2 would produce?
Describe a situation where a substance changed between the solid and liquid states or between liquid and gas states? Can you describe an example of when a substance changed between the gas and solid states? Let's see how many different examples we..
you will need to construct a calorimeter to complete this project. what are the necessary features of a calorimeters. please answers have to be related to chemistry and specifically to this experiment.
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
Calculate the volume of each of the following gas samples at STP 8.1 mol c2h2, .255 mole ci,0440 mol co2, 24.1 mol n2o in L
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal.
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