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Why do we think that a saturated solution of calcium hydroxide must be made fresh on the day it is to be used? While conducting the experiment to be more specific why do we prepare the solution on the same time we conduct the experiment not before a day why does it have to be fresh?
Suggest a mechanism for the base catalyzed condensation of cyclohexanone with two molecules of benzaldehyde to give dibenzalcyclohexanone
Calculate the equilibrium constant
Explain the explosive, tnt is composed of 37.0% carbon 2.20% hydrogen,18.5% nitrogen, and 42.3% oxygen. a. Find out he empirical formula for tnt.
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of H2O will be: CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)
Problem- What volume (in mL) of 1.81 M solution of sodium chloride is needed to make 58.2 mL of a 0.531 M solution. Assume the volumes are additive.
Calculate the molarity if 14.5 g of NaOH was dissolved in enough water to give 360 mL of solution.
A mole of sodium hydroxide has a mass of 40 g. In order to prepare a .1M solution, how many grams of sodium hydroxide must be added to 500 mL of water
A solution of a specific vitamin has ?max = 223 nm and a concentration of 8.31 × 10-7 M. The absorbance of the solution at 223 nm is A = 0.180. What is the molar absorptivity of the vitamin at 223 nm?
a 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25degc and the volume of the balloon is 12.2 l.
A 1.0-L buffer solution is 0.105M in HNO 2 and 0.145M in NaNO 2. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1.4g NaOH.
Write a balanced chemical equation for the reaction of hydrochloric acid with calcium hydroxide. Include states of reactants and products.
Calculate the density of helium in a helium balloon at 34.7 degrees C. (Assume that the pressure inside the balloon is 1.19 atm) answer is in g/ml
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