Chemistry Questions and Answers November 15, 2019

Nickel has an atomic radius of 0.162 nm. The edge of its cubic unit cell is 0.458 nm. What is the geometery of the nickel unit cell?

(a) What is the % composition of the vapor in equilibrium with a boiling liquid that has a composition of 30% benzene and 70% toluene. b). If a sample of vapor is found to have a composition of equal parts benzene and toluene, what is the composition of the boiling liquid that produced this vapor?

PostLab Questions 1. Refer to MtC Figure 317 to answer the following questions. Note that each vertical line in the graph grid equals 5, and the scale runs both ways for benzene and toluene 100 benzene 0 benzene 0 toluene 100 toluene a. What is the composition of the vapor in equilibrium with a boiling liquid that has a composition of 30

When SO3 is added to a sealed bulb at a pressure of 2.0 atm, it undergoes the reaction above. At equilibrium, 76% of the SO3 has reacted. What is the value of Kp at this temperature? 2SO3(g) <--> 2SO2(g) + O2(g)

Prepare by practicing with the data provided to solve for H and S and use the equation G = H - TS. Temperature 1 = 15 K and G= -35.25 KJ/mol Temperature 2 = 75 K and G= -28.37 KJ/mol

The heater used in a 4.32 m3.55 m2.91 m dorm room uses the combustion of natural gas (primarily methane gas) to produce the heat required to increase the temperature of the air in the dorm room. Assuming that all of the energy produced in the reaction goes towards heating only the air in the dorm room, calculate the mass of methane required to

Two posssible Lewis structures for the molecule CH,S are given. Determine the formal charge on each atom in both structures. Answer Bank S 2 3 HC V Scroll Which structure is the best Lewis structure for CH,S

4. Chlorine is reacted with potassium bromide to produce potasolum chloride and bromine a) Write and Balance the equation b) If 1.855g of Chlorine and 3.20s grams of potassium bromide are mixed in solution. c) What is the Limiting Reactant d) How many mols of the excess reactant remains

Use the data in the table below to plot a standard curve (this must be submitted with the problem set) and determine the concentration of the unknowns if possible (use graph paper from the lab manual, DO NOT PLOT USING EXCEL- if you plot using Excel, 10pts will be deducted!). If it is not possible to determine the concentration of the unknown(s),