Physical Chemistry Answers

A vessel containing an unknown volume of Argon in cm³at 300°F and 101kpa was inverted and placed in cold Ethanol. As the gas contracted , the pressure was quadrapled while the temperature was reduced by one _third.

What is the final volume of the gas in dm³

Aqueous ammonia is considered a weak base since it deprotonated water to a small extent to produce hydroxide ions.

Calculate the pH of a 2.0 mol/dm3 solution of Aqueous ammonia (Kb for ammonia =1.8*10^-5)

How many moles of H₂ and HI will be present at equilbrium if 0.1570 mol HI are placed into a 1-L flask and allowed to react at a temperature where for the following reaction takes place:

2HI(g)  H₂(g) + I₂(g)K = 10.8

You use a balance to two decimal places to weigh out the evaporating basin and it has a weight of 45.73g. You then evaporate off the saturated solution and reweigh your evaporating basin with the solid chemcial residue left behind and it weighs 45.98g. What is the associated absolute error of the mass of the chemical residue?

What is the equation for Carnot system used to calculate T(h)? I'm confused by each equation and what they mean

Q.2 Calculate the number of molecules in a drop of water weighing 0.05g(H=1, O=16).