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4.62 (a) Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution. (b) How many moles of KBr are present in 150 mL of a 0.275 M solution? (c) How many milliliters of 6.1 M HCl solution are needed to obtain 0.100 mol of HCl?
What is the pH at equivilance point? c. What is the pH of the solution when 106.4mL of 1.721 M NaOH has been added to the 0.591 M acetic acid solution?
What are the mole fractions of ethanol and water in a solution prepared by mixing 55 mL of ethanol with 45 mL of water at 25 degrees celsius
Number of exhaled molecules, Total mass of the atmosphere is equivalent to that in a layer 7 kilometer deep with density equal to the density at the surface
An isotonic solution is described as 0.92% NaCl (g/mL). Would this also be the required concentration for isotonic solutions of other salts, such as KCl, MgCl2,
Based on the solubility rules, which one of these is insoluble in water?
When a carboxylic acid is reacted with a strong base, the product is aA.carboxylic acid
Calculate ?Ssys (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
During the purification and recrystallization of a solid why can't you just remove the solvent by evaporation after filtering and decolorizing
Draw three six-carbon alkenes, each of which forms the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide,
If 2.00 g of isopentyl alcohol is reacted with 10.0 mL of acetic acid and 2 drops of sulfuric acid, what is the theoretical yield? Report your value to TWO decimal places (x.xx g).
Draw the structure of the product that is formed when (1R,3S)-3-methylcyclohexan-1-ol is treated with the following reagents
a solid acid is dissolved in enough water to make 200 ml of a solution. 40 ml of the solution is titrated to a phenolphthalein end point with an NaOH solution.
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