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12,439 solutions

The Nernst Equation

Q. What is the cell potential for the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 85 ∘C when [Fe2+]= 3.30 M and [Mg2+]= 0.310 M .

Solved • Dec 5, 2019

Lewis Dot Structure

Q. In the space below, draw the skeletal structure or line-angle formula for caffeine.

Solved • Dec 5, 2019

Equilibrium Expressions

Q. The equilibrium constant, Kp, for the following reaction is 2.74 at 1.15×103K. 2SO3(g )<---> 2SO2(g) + O2(g) If an equilibrium mixture of the three gases in a 10.6 L container at 1.15×103K contains SO3 at a pressure of 2.53 atm and SO2 at a pressure of 1.15 atm, the equilibrium partial pressure of O2 is what? (in atm.)

Solved • Dec 5, 2019

ICE Chart

Q. A student ran the following reaction in the laboratory at 547 K: COCl2(g) <---> CO(g) + Cl2(g) When she introduced 0.714 moles of COCl2(g) into a 1.00 liter container, she found the equilibrium concentration of COCl2(g) to be 0.680 M. Calculate the equilibrium constant, Kc, she obtained for this reaction.

Solved • Dec 5, 2019

Hybridization

Q. Glutamic acid - shown below - is the most common neurotransmitter in the brain! During finals week, you should be making a lot of it, transmitting signals from one neuron to the next. Circle any sp3 hybridized atoms. Box any sp2 hybridized atoms. Point to any sp hybridized atoms. Which atoms use no hybridized orbitals? What atomic orbital do they use?

Solved • Dec 5, 2019

Percent Yield

Q. Ch8_66. Magnezium oxide can be produced by heating magnesium metal in the presence of oxygen. The balanced equation for the reaction is: 2 Mg(s) + O2(g) ----> 2MgO (s). When 10.1 g of Mg react with 10.5 g of O2, 11.9g of MgO are collected. Determine the limiting reactant, theoretical yield, and percent yield for the reaction.

Solved • Dec 5, 2019

Structural Formula

Q. draw the skeletal structure or line-angle formula for vitamin C. Then draw circles to represent atoms. Try to do this using relative atomic sizes for the atoms. Then shade the atoms of your molecule according to their partial charges: red for negative, blue for positive, and gray for neutral. Then indicate which carbon atom you think is the most positive.

Solved • Dec 5, 2019