Chemistry Homework Solutions

First order reaction

The first order reaction 2A --> 2B + Cis 35% complete after 325 seconds. 1. Find K 2. How long will it take for the reaction to be 70% complete? 3. 90 % complete

Surface tension/Relative adsorption

Surface tension/Relative adsorption. See attached file for full problem description.

Pizza...4 slices, topped off by a Big Mac, fries, and a shake. Then an evening on the couch watching the Tube. What are the short and long-term consequences of this kind of a lifestyle?

Pizza...4 slices, topped off by a Big Mac, fries, and a shake. Then an evening on the couch watching the Tube. What are the short and long-term consequences of this kind of a lifestyle? How do we store the energy from this?

Half Life Homeowrk Problems

Is there just one formula to calculate half life problems? What is the process or formula for solving these problems. 1. A 2.5 gram of an isotope of stontium-90 was formed in a 1960 explosion of an atomic bomb at Johnson island inthe Pacific test Site. The half -life of strontium-90 is 28 years. In what year will only .625 ...continues

Mole Fraction

A certain mixture of He and Ne in a 356cm^3 bulb weighs 0.1480 grams and is at 20.0 degrees Celcius and 748 torr. Find the mole fraction of He present.

Food Chemistry

1. What unusual aspect of water is responsible for it unique characteristics as both a liquid and as a solid? Give examples of how this property of water would affect food systems during processing. 2. The value of ∆G tells use what about chemical reactions? Give three situations and examples. 3. Chemical potential ( ...continues

1st Law of Thermodynamics - Internal Energy, Heat and Work Problem

Calculate the change in internal energy (DU), heat (q) and work (w) when one kg of Ne is heated from 300 K to 400 K (a) at constant pressure (b) at constant volume (Assume an ideal gas)

Mechanism for Belousov-Zhabotinski Reaction

Mechanism for Belousov-Zhabotinski Reaction Please see attached file which has the question that I want you to help with. The above question is related to the the bottom left hand side box titled "coursework".

Equilibrium constant and Gibbs free energy

3. An experimenter places 15.0 mmol of A and 18.0 mmol of B in a container. The container is heated to 600 K and the gas phase equilibrium A + B = 2C + 3D is established. The equilibrium mixture is found to have a total pressure of 1085 torr and contain 10.0 mmol of C. Find Kp and gibbs free energy at 600 K.

Equilibrium constant

A certain gas mixture held at 395C has the following initial partial pressures: P(Cl2) = 351.4 torr; P(CO) = 342.0 torr and P(COCl2) = 0. At equilibrium, the total pressure is 439.5 torr. The volume is held constant. Find Kp for the reaction: Cl2(g) + CO(g) = COCl2(g)

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