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A 0.1206-g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized potassium hydroxide. The equivalence point in the titration is reached after the addition of 22.39 mL of 0.1427 M potassium hydroxide to the sample of the unknown acid. Calculate the molar mass of the acid.
an aqueous solution is prepared by dissolving 1.50g of hemocyanina protein obtained from crabs in 0.250 l of water. the
what percent of the fuel consists of the lighter isotope? Assume that the masses of the two isotopes are exactly 235 and 238 amu.
The decomposition of Phosphine, PH3(g), to P4 (g) and H2 is first order with rate constant of 1.1 min-1. How long will it take to decompose one fifth of the Phosphine
Can Beta-oxidation or fatty acid synthesis pathways be utilized for a 22-carbon fatty acid. If so which one both or neither
You weigh 10 of the rings as well as find that they have combined mass of 7.38g; you then place them Ina graduated cylinder 2.5 cm in diameter as well as observe that the water level rises by 8.45 mm. Are the rings pure silver
Question- The rate constant for this first order reaction is .830 s -1 at 400 C. How long in seconds would it take for the concentration of A to decrease from .690 M to .370M
Predict that it was dissolved in HCl then mixed into the diethyl ether because diethyl ether is a base and since the benzoate contains an amine group they would remain unreactive with one another.
The first-order rate constant for the reaction of methyl chloride (CH3Cl) with water to produce methanol (CH3OH) and hydrochloric acid (HCl) is 3.32 10-10s-1 at 25°C. Calculate the rate constant at 38°C if the activation energy is 116 kJ/mol.
calculate PH of buffer
when solutions containing 1.00 g ofbacl2 and 1.00 g ofna2so4 were mixed solid baso4 formed. the baso4 precipitate
1.150g of sucrose goes through combustion in a bomb calorimeter. If the temperature rose from 23.42 to 27.64 degrees Celsius and the calorimeter constant was 4.9kJ/ Celsius, determine the heat of combustion of sucrose in kJ/mol.
When CO2 is bubbled through an ether solution of benzylmagnesium bromide, and the resulting mixture is acidified, phenylacetic acid is produced.
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