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A gaseous mixture contains 407.0 Torr of H2 , 377.5 Torr of N2 , and 83.3 Torr of Ar , calculate the mole fraction, X, of each of these gases .
X H2 : number
X Ar : number
X N2 : number
A sample of seawater consists of water, sodium ions, chloride ions, and several other dissolved salts. These ions and salts are evenly distributed throughout the water. Which term or terms could be used to describe this sample of seawater?
How much energy in kilojoules is required to convert 260 mL of water at its boiling point from liquid to vapor?
The pH of the solution at the equivalence point. e) The pH of the solution after 40.0 mL of HCl are added.
2 NO(g) + O2(g) 2 NO2(g) In one experiment 0.633 mole of NO is mixed with 0.354 mole of O2. Calculate also the number of moles of NO2 produced.
suppose you wish to make a .879 L of .250 M silver nitrate by diluting a stool solution of .675 M silver nitrate. How many milliliters of silver nitrate do you need to use.
What is the hydronium ion concentration of a solution with an hydroxyl ion concentration of 1.8 x 10^-10 M? D) What is the hydronium ion concentration of a solution with an hydronium ion concentration of 5.13 x 10 ^-9 M?
2KClO3 + heat > 2KCl + 3O2, How many moles of O2 form as 3.0 mol of KClO3 are totally consumed.
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
Salt in crude oil must be removed before the oil undergoes processing in a refinery. The crude oil is fed to a washing unit where freshwater fed to the unit mixes with the oil and dissolves a portion of the salt contained in the oil
Design a laboratory set-up that would enable you to separate a mixture of three hydrocarbons with different boiling points. Draw and label a diagram of your set-up
A cylinder is separated into two sections Y and Z by an insulating frictionless piston and sealed at both ends. Each section has two moles of an ideal gas.
An interstitial allow was prepared from two metals. Metal A with the larger atomic radius has a hexagonal closest-packed structure. What is the formula of the alloy if atoms of metal B occupy the following?
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