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1) How many particles are in 0.425 mol of Hg?
2) What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.106 g?
Calculate DE, and determine whether the process is endothermic or exothermic for the following cases: q = -142 kJ and w = -530 kJ.
gold can be hammered into extremely thin sheets called gold leaf. if a 211-mg piece of gold density 19.32 gcm3 is
What mass of sucrose should be combined with 455 g of water to make a solution with an osmotic pressure of 8.75 atm at 320 K?
at 25degc k 0.090 for the following reaction.h2og cl2og lt---gt2 hoclgcalculate the concentrations of all species at
calculate the mass of propylene glycol that must be added to 0.340 of water to reduce the vapor pressure by 2.86 at 40
Assuming that the gas becomes saturated with benzene vapor and that the total gas volume and temperature remain constant, what is the vapor pressure of the benzene in torr
The osmotic pressure of a solution containing 26.5 mg of an artificial sweetener per liter is 1.70 torr at 30C. Calculate the molar mass of the compound.
A sample of nitrogen of mass 3.12 g at 23 C is allowed to expand reversibly and adiabatically from 400 cm^3 to 2 dm^3
when 50.0 grams of silicon dioxide is heated with an excess of carbon 32.2 grams carbonide along with carbon monoxide.
The titration of a 25 ml sample of 0.110 M HC2H3O2 with 0.130 M NaOH. Determine the following? the initial pH, the volume of added base required to reach the equivalence point
Take the x-axis as lying perpendicular to the plane of the molecule. Does the N2px orbital participate in the hybridization for either species? Briefly explain your answer.
The procedure calls for the addition of 7-8 drops of aqueous NaOH. What is the purpose of the base here? Be specific and show the reaction that occurs
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