Physical Chemistry Answers

The value of Ke is 2.3x10 ^ 3 for a system formed by 44.56g of oxygen that reacts with C3H6O2. Calculate the concentration if 0.057g of water and 0.082lb are obtained by combustion. All gases. The container is 4.75L

What pressure (in atm) would be exerted by a mixture of 1.4 g of Chlorine gas (Mm= 70 g/mol) and 4.8 g of nitrogen gas (Mm= 28 g/mole) in a 200 mL container at 57oC?

The distribution coefficient of iodine between CCl4 and H2O is CCCl4/CH20 = K = 85, where CS is the concentration (mol/L) of iodine in the solvent S. a. If 90 % of the iodine in 100 cm3 of aqueous solution is to be extracted in one step, what volume of CCl4 is required? b.. What volume of CCl4 is required if two extractions, using equal volumes, are permitted?

Why must magnesium ribbon be polished first before using it in a chemical reaction?

Why must the smaller test tube containing the heated sulfur be immersed in a beaker filled with water?

what is the hardness of a solution containg 0.777g of nacl and 0.7g of mgcl2 per 250ml

A 2.50-g of sucrose (C₁₂H₂₂O₁₁) was burned with excess oxygen in a calorimeter which contained 1.95 kg of water. The temperature of the calorimeter and contents increased from 18.22^◦C to 22.73^◦C. The calorimeter had a water equivalent of 240 g. Determine the heat of combustion of sucrose in kcal/mole.

 C₁₂H₂₂O₁₁(s) + 12 O₂(g)  --------------> 12 CO₂ (g) + 11 H₂O (l)

2A + 3B TO PRODUCT

The hydrolysis of a substance is specifically catalyzed by hydrogen ions, and the rate constant is given by the equation: k/dm^3 mol^-1 s^-1 = 4.7 x 10^-2([H+]/mol din^-3) When the substance was dissolved in a 10^-3 M solution of an acid, HA, the rate constant was 3.2 x 10^-5- dm^3 mol^-1 s^-1. What is the dissociation Constant of HA?

The term symbols associated with the 𝑑𝑑8 electron configuration of an atom are: (see Table 8.4 of McQuarrie, P299.) 1S, 1D, 1G, 3P, 3F (a) [2 pts] Give the possible S values for the 3P term symbol. S is total electron spin angular momentum. (b) [2 pts] Give the possible mS values for the 3P term symbol. mS is the projection of S. (c) [2 pts] Give the possible L values for the 3P term symbol. L is total electron orbital angular momentum. (d) 2 pts] Give the possible mL values for the 3P term symbol. mL is the projection of L. (e) [5 pts] Give the possible J values for the 3P term symbol. J=L+S is the total angular momentum of the atom. (f) [7 pts] According to Hund’s rules, order the five term symbols above in the order of increasing energy.