Physical Chemistry Answers

4) Describe how you would prepare 1.0 L of a 0.10 M solution of sulfuric acid from a 3.0 M solution of sulfuric acid.
5) Describe how you would prepare 500 mL of a 1.0 M solution of potassium chloride that is 93.0% pure. The gram formula weight of potassium chloride is 74.56 g/mol.
6) Describe how you would prepare 1000 mL of a 1.0 N solution of magnesium hydroxide. The gram formula weight of magnesium hydroxide is 58.33 g/mo

1) Describe how you would prepare 1 L of a 1 M solution of sodium chloride. The gram formula weight of sodium chloride is 58.44 g/mol.
2) Describe how you would prepare 1 L of a 2 M solution of acetic acid. The gram formula weight of acetic acid is 60.05 g/mol, and its density is 1.049 g/mL.
3) Describe how you would prepare 100 g of a solution that is 0.5% phenolphthalein by mass.

A current is passed through three electrlyctic cells connected in series containing slotions if silver trioxonitrate (v), copper (ii) trioxosulphate (vi) brine respectively. if 14.5g of copper are deposited in the second electrolytic cell, calculate (a) mass of silver deposited in the first cell (b) the volume of chlorine librated in the third cell at 180c and 810mm hg pressure

What is the ground state energy for an electron that is confined to a potentialwell with a width of 0.2 micrometer um?

Calculate the wave length s of the following cases : 1)neutrons thermally excited at T = 500 degrees K 2) electrons accelerated by a voltage of 50kV.

Calculat the ionization energy of hydrogen atom using bohrs theory

A suspension of yeast cells is to be filtered at a constant filtration rate of 50 L/min.
The suspension has a solid content of 70 kg/m3 of suspension and the yeast cells
have a bulk density of 800 kg/m3. Laboratory tests indicate that the specific cake
resistance is 40 m/kg and the viscosity of the filtrate is 2.9x10-3 kg/m.s. The filter has
an area of 0.1 m2 and the medium offers negligible resistance. How long can the
filtration rate be maintained before the pressure drop exceeds 1 N/m2? What volume
of cake and filtrate are collected during this time? Note that ρ0 is expressed in mass
of solids per volume of filtrate and NOT total volume of suspension.

At 60oC the value of Kw is 90.5 x 10-4. Considering this, what is the calculated value for the pH of solution made by dissolving 1.00g of sodium hydroxide in enough water to make 500ml of solution at this temperature?

Q. Given the rate of the third order reaction:
A+B+C→P is 0.05 Ms-1
If the [A] = 0.05 M, [B] = 0.01M, and [C] = 0.25M. What is the third order rate constant?

Q. What are the units of the rate constant for a second-order reaction?

Q. Given the first order reaction is completed 90% in 30 minutes at 298 K. Calculate the rate