Physical Chemistry Answers

discuss the effect of temperature on mean free path

Find the number of moles in 452L of NH3 at STP. 

Find the Volume in 7.86 mol of O2 at STP. 

Calculate the number of Liters in 1483g of NH3 at STP.

How many moles are in 288 L of CO2?

How many grams are in 1288 L of CO2?

Find the mass in grams of 32L of NH3 at STP

the smallest observed frequency for a transition between states of an electron n=2 is a one dimensional box is 3 * 10, what is length of box in nm

1. Fe2O3 + 3CO → 2Fe + 3CO2 How many grams of iron metal can be refined from the mineral hematite (iron oxide) if 59.5 mol of carbon monoxide was allowed to react with it. 

1. The reaction between water and carbon monoxide will reach dynamic equilibrium: 

                             H2O(g)   +  CO(g)  ⇌ H2(g)  + CO2(g)  ∆H = -42.1 kJ mol-1 

Use Le Chatelier’s principle to state and explain the effect on the concentration of hydrogen in the equilibrium mixture if the following changes are made: 

1. The concentration of CO(g) is increased 
2. The temperature is decreased 
3. The pressure is increased 

derive henderson hasselbalch equation for weak acid

State the apparatus that can be used in determining the molecular speed og=f gas molecules.

Calculate the fraction of oxygen molecules moving with a speed between 700 ms^-1 and 710 ms^-1 at 300K using the following equation.

f(u) du= dN/N= 4πu² (M/2π RT)^3/2 e^{-(Mu^2/2RT) du}

1a)Nitrogen molecules made 7.0 x 10⁹ collisions in one second at 298K and 1 atm. Determine the molecular diameter for nitrogen molecules.

b) Determine the average distance travelled by nitrogen molecules between collisions in molecular diameter of nitrogen molecule.

The density of gas molecule A is double than that of gas molecule B at 27⁰C. How many times the root mean square speed of gas A is slower than that of gas B at this temperature?