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Each of three closed (gas-tight) systems at 25°C contains 1.0 L of a 10 μmol/L chloroform
solution, but they are in equilibrium with different gas phases.
System I contains 1.0 L of gas with Ptot =1.0 atm,
System II contains 2.0 L of gas with Ptot = 1.0 atm, and
System III contains 1.0 L of gas with Ptot= 2.0 atm.
(a) What is the gas-phase concentration in each system?
(b) What is the total mass that was added to (and is still in) each system?
An unknown element, X, reacts with sulfur to form an ionic compound having the empirical formula (S is sulfur). If the ion X has 21 electrons, identify the element
A lab technician makes three successive 10.0mL to 100.0mL dilutions of a .970 M stock solution of Copper(II) Chloride, then adds 3.00mL to a test tube initially containing 7.00mL of an ammonia solution. What is the molarity of copper(II) ions in t..
the vapor pressure of water at 90.0 is 526.8mm hg what mass of ethlene glycol (mw 62.7gmol) when added to 1.50 kg of warer will lower the vapor ptessure
A solution containing 27.05 mg of an unknown protein per 22.0 mL solution was found to have an osmotic pressure of 3.10 torr at 12 C. What is the molar mass of the protein
How much heat is required to vaporize 55.0 of acetone at its boiling point? The heat of vaporization of acetone at its boiling point is 29.1.
Phosphoric Acid, H3PO4(aq) is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH and the concentrations(M) of all species in a 0.450 M phosphoric acid solution.
Draw the major, neutral organic product for each substitution reaction below. For this question, assume that each substitution reaction goes to completion. Disregard elimination.
what mass of melamine will be obtained from 168 kg of urea if the yield of the overall reaction is
Write a balanced net ionic equation for the neutralization of equal molar amounts of nitric acid and methyl amine (CH3NH2). Indicate whether the pH after neutralization is greater than, equal to, or less than 7.
Give at least 5 members (ions) of the same isoelectronic series as neon. Arrange them in order of smallest ionic radius to largest ionic radius.
pure 2-methylpentane is held in a closed container at 150 deg f. both gas and liquid are presend. what is the pressure
When 0.538 g of Neon is added to an 800 cm^3 bulb containing a sample of argon, the total pressure of the gases is found to be 1.17 atm at a temperature of 295 K. Find the mass of the argon in the bulb.
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