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If you are performing a Zinc-Copper Galvanic Cell where Zn is the Anode and Cu is the cathode and you soak the salt bridge with a saturated ammonium nitrate solution, in which direction would the ammonium ions move when the salt bridge completes the electric circuit? Toward the Zinc or copper metal? In which direction do the nitrate ions move?
Compute the initial pressure of the gas in the cylinder. b. Compute how much heat must be added to the gas in the cylinder for the spring to compress by 2cm
What volume of decinormal dichromate solution will be reduced by 1 g of tin ? At. wt. of Sn = 118.7.
Use the dipole moments of and ( = 1.08, = 1.82) together with the percent ionic character of each bond ( 20% ionic, 45% ionic) to estimate the bond length in each molecule.
In the reaction below, 4.86 atm each of H2 and Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kc = 89.9, calculate the equilibrium pressure of HCl.
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
The first appearance of a yellow color that lasts for more than 30 seconds occurs after 14.50 mL KI have been added. What is the value of the ion product of the titration?
The activity coefficients for acetic acid and the acetate ion are 1.000 and 0.775, respectively, in a solution with an ionic strength of 0.10 M.
A pound of coffee beans yields 40 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1.0 of coffee beans?
what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25'C.
what are the structural formulas for the following compound : 6-bromo-2-methyl-3-heptyne
Describe the development of the modern periodic table. Include contributions made by Lavoisier, Newlands, Mendeleev, and Moseley.
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy relased by the formation of water from H2 and O2 into eletrical energy.
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