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Determine the of a solution that is 1.85% by mass. Assume that the solution has density of 1.01
the atomic mass of element x is 33.42 amu. a 21.83-g sample of x combines with 80.32 g of another element y to form a
An insoluble non reactive solid metal sphere weighing 41.55 g is added to 35.82 mL of water in a graduated cylinder. If he density of the metal is 11.91 g/mL
Calculate the molar solubility of copper(II) sulfide in each liquid or solution. (See the table.) (a) pure water M (b) 0.43 M CuCl2 M (c) 0.17 M K2S M
Determine its molecular formula if the molar mass of the compound = 199.55 grams per mole?
Which of the following condensed notations correctly represents oleic acid
Prepare a standard of lidocaine in methanol with a final concentration of 1.00 mg/mL using the powder lidocaine/HCl. Show the calculations and explain how you take the salt form into account.
A radiation source has an intensity of 650 rem at 1.0 m, what distance is needed to decrease the intensity of expo- sure to below 25 rem, the level at which no effects are detectable
What volume o CO gas is produced by the following reaction at 240K and 1 atm pressure? Use ideal gas law for this gas
A solid sample containing some Fe 2+ ion weighs 1.062g. It requires 24.12 mL 0.01562 M KMno4 to titrate the Fe2+ in the dissolved sample to a pink end point.
A sample of 5.20ml of diethylether (C2H5OC2H5; density=0.7134g/ml) is introduces into a 6.40L vessel that already contains a mixture of N2 and O2 whose partial pressures are PN2=0.751atm and PO2=0.209atm
You decide 20.1 g of KCl in 1.00 kg of water. The volume of the resulting mixture is virtually identical to the original volume of the 1.00 kg of water.
Water contained in a piston-cylinder assembly undergoes two process in series from an initial state where the pressure is 10 bar and the temperature is 40°C. at first, the water is cooled as it is compressed at a constant volume to 150°C.
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