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An isotonic solution contains 0.87 by mass per volume. Calculate the percent mass per volume for isotonic solutions containing each of the following solutes at 15. Assume a van't Hoff factor of 1.9 for all ionic solutes.
KClNaBrGlucose
A certain substance has a heat of vaporization of 44.76 KJ/mol. At what kelvin temperature will the vapor pressure be 4.00 times higher than
The molar mass of compound is measured to be 33.4, 35.2, 34.1, 33.9 g/mol in four trials. What is the avg molar mass & calculate standard deviation and %RSD for determination of the molar mass
a 50.0 ml sample of vinegar density 1.06 gml was diluted to 500.0 ml.nbsp titration of a 50.0 ml aliquot of this
What are the values of [SO42- ], [Pb2+ ], and [Sr2+ ] in a solution at equilibrium with both substances? the answer is not 5.*10^-4 or 7.94*10^-4 because mastering chem keeps marking me wrong for that. Can you work it out nicely.
a 25ml sample taken from saturated solution of caoh2 required 36.0ml of 0.100m hcl to titrate. calculate the
The empirical formula of a solid is AB2 and it dissolves to form the cation A2+ and the monoanion B-.
How much heat is released by 100.0 mL of a dilute solution of NH4NO3 as it changes its temperature from 22.4C to 19.1C when it is being prepared?
How many joules of heat are required to heat 143 g of aluminum from 55.0 oC to 66.5oC?
A lab student analyzed a nickel-en complex for ethylenediamine, en, content. A 0.353g sample of the synthesized Ni-en complex was dissolved in about 50 mL of water and titrated with 0.165 M HCl (aq). Endpoint required 36.40 mL of the HCl (aq)
Write the condensed electron configurations for the following atoms, using the appropriate noble-gas core abbreviations. In order of increasing orbital energy. a) U b) Pb
If a nonvolatile, yellow crystalline solid sample of 0.351 g is dissolved in benzene (C 6 H 6 ) of 15.8 g formed a solution. this solution freezes at the temperature of 4.77 degree celsius.
Elimination competes with substitution. write an equation for the elimination reaction of 2 chloro 2 methylpropane in water
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