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Express the concentration of a 0/0200 M aqueous solution of fluoride, F-, in a mass percentage and in parts per million. Assume the density of the solution is 1.00 g/ml
Calculate the molarity of a solution made by adding 27.8 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask, then adding water
A current of 3.65 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution
The saturated vapor pressure of mercury is 0.0020 mmHg at 300 K and the density of air at 300 K is 1.18 g/L. (a) Calculate the concentration of mercury vapor in air in mol/L. (b) What is the number of parts per million (ppm) by mass of mercury in ..
How many grams of sucralose would you need for a solution that has the same sweetness as one made with 2.00g of sugar? Please show how to solve problem
when ethane c2h6 reacts with chlorine cl2 the main product is c2h5cl but other products containing cl chlorine such as
A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. a) what is the linear attenuation coefficient for this material? b) What is the half thickness? c) what is the mean-free-path length for 1.25-MeV photons in this mate..
Sulfur dioxide is made from the reaction of sulfur dioxide and oxygen: 2 SO2(g) + O2(g)to 2 SO3(g). What is the maximum volume of SO3 produced in a reaction of 1.91 g SO2 with 1.29 g O2? The SO3 gas is collected at STP conditions.
Cl2+2KBr yields 2KCl+Br2- how many moles of potassium chloride are produced from 119 g of potassium bromide
Using the henderson hasselbach equation if [H+] =1.55x10^-4 and the ratio [A-]/[HA] = 0.52, what is the Ka of the solution? Is this consided to be a strong or weak acid?
A buffer solution contains 0.23 mol of carbonic acid (H2CO3) and 0.55 mol of sodium hydrogen carbonate (NaHCO3) in 2.10 L. The Ka of carbonic acid (H2CO3) is Ka = 4.3e-07. (a) What is the pH of this buffer? pH = (b) What is the pH of the buffer af..
Which of the following is always true for a spontaneous process at constant temperature. A) Delta S system + Delta S surroundings = q/T B) Delta S > 0 C) Delta S = q/T D) Delta system + Delta S surroundings > 0 E) Delta S
which one of the following represents the best method for the preparation of 3-chloro-3 ethylpentane?
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