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An effusion cell has a circular hole of diameter 2.50 mm. If the molar mass of the solid in the cell is 260 g mol-1 and its vapour pressure is 0.835 Pa at 400 K, by how much will the mass of the solid decrease in a period of 2.00 h?
What is the pressure in a 15.6L cylinder filled with 45.5g of oxygen gas at a temperature of 310K
There are two benzylic bromides that give (E)-4,6-dimethyl-3-phenyl-3-heptene on E2 elimination. Draw them.Use wedge and dash bonds to indicate stereochemistry.
What mass of Cu is electroplated by running 13.0 A of current through a Cu^2 solution for 4.00 h? Express your answer to three significant figures and include the appropriate units.
The case study will include a Synopsis and three Findings of Fact. Each Finding of Fact will require a justified recommended solution. Students should support their recommended solutions with rational thought learned from the course material
Models do not necessarily have to be physical objects. They can be two-dimensional drawings or even mental constructs. Cite one or more examples of such models encountered outside of chemistry. Can you think of models that are used in your own..
Compare and contrast the accuracy and precision of at least three types of measurements used in your life
a rectangular block of plastic measuring 1.34 cm by 2.27 cm by 1.39 cm floats in the middle of the pacific ocean. the
In the reaction below, 7.57 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 11.8, calculate the equilibrium pressure of Br2.
Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitrogen monoxide, and water vapor.
determine the number of calories and joules required to melt the ice given the following informationinitial water
Problem- A concentration cell is constructed by placing identical iron electrodes in two Fe2+ solutions. The potential of this cell is observed to be 0.047 V. If the more concentrated Fe2+ solution is 0.10M, what is the concentration of the other ..
7.41g of O2 are combined with 5.23g NH3 , and the reaction proceeds. What mass of NO is produced?
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