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A pure silver ring contains 2.80 x 10^22 silver atoms. How many silver atoms does it contain? Please show your steps and solutions.
Coal = 3.9% sulphur power plant while producing electricity turns coal into sulphur dioxide gas calcium oxide is used to react with sulphur dioxide and forms solid calcium sulfite coal
A 1.724 M solution of a compound in water has a density of 1.281 g/mL at 20°C. The compound has a molar mass of 62.30 g/mol.
Calculate the pH at the equivalence point for the following titration: 0.10 M HCN versus 0.10 M NaOH. The Kb of CN- = 2.0 x 10-5.
What is the volume of a gas at T=35.0C and P=675 torr if the same sample occupied 42.6L at T=-27.3C and P=1.000 atm.
Write a balanced reaction for the acid-base reaction of diethylbenzyl phosphonate with sodium hydroxide. Which hydrogens are the most acidic?
Make the following assumptions in your calculation; at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is no..
what mass of solid LiOH must be added to 1.0 L of 1.35 M hydrofluoric acid solution in order to create a buffer solution
how much acetone (CH3COCH3) would be needed to obtain 3.35 moles of acetone? the desnity of acetone is 0.851 g/mL.
Many elements can have more than one charge or oxidation number. In this set of problems, we will assign oxidation numbers to each atom in sulfate, carbonate, bicarbonate, bisulfate, sulfite, nitrate, nitrite, chlorate, and perchlorate.
suggest a procedure you could follow to determine whether it was necessary to use this solution as a reference or whether distilled water would have been just as satifactory
A solution of .637g of the solid in 24.1g of the solvent diphenyl gave a freezing point depression of 1.76 degree celsius. Calculate the molar mass and molecular formula of the solid(k1 for diphenyl is 8.00 degree celsius/m)
Calculate the rate constant of the catalyzed and uncatalyzed reactions. How many folds of rate enhancement are produced by the enzyme? The rate constant is 13.46 but what is the nuber of folds of enhancement that are produced by the enzyme?
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