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A galvanic cell based on the reaction between silver ions and copper is constructed. The chemical equation for the reaction is 2Ag+(aq) + Cu(s) ----> 2Ag (s) + Cu2+(aq). Identify the anode and cathode in this cell. Which electrode increases in mass as the reaction proceeds?Why? If the voltage across the electrodesis observed to be 1.1 V, what would be the voltage if 3 of these cells are connected in series?
A sample of helium gas has a volume of 8.23 L at 258.8 K and 2.049 atm. How many helium molecules does it contain
Estimate the concentration of KCL solution at 298K, if the vapor pressure of pure water is 23.76 mmHg and that of KCL solution is 22.98 mmHg
Naturally occuring sulfur consists of four isotopes: 95.0% 32s (31.97207amu); 33s (32.97146amu, 0.76%);
undergo combustion according to the unbalanced equation C2H6+O2=CO2+H2O how many moles of oxygen are required?
What is the final temperature of the water when equilibrium is reached? (Assume a density of 0.998 (g/mL) for water.)
If 3.00 moles of ZnS are combined with 4.00 moles of O2 how many moles of ZnO can be produced and how many moles of the excess reactant will be left over?
Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 3O2 (g) = 2Al2O3(s). How many liters of O2 gas, measured at 779 mm Hg and 30 C, are required to completely react with 2.5 mol of Al?
aniline, an organic amine, C6H5NH2, a weak base with Kb of 4.0x10^-10, reacts with water to form its conjugate acid, C6H5NH3^+. write the equation and the base dissociation constant for aniline.
Choose the selection which correctly identifies the forces which must be overcome to convert NH3 from a liquid to a gas. a) Only London dispersion forces must be overcome. b) Only dipole-dipole forces must be overcome
For the calcium ion create a procedure for preparing a 0.100 M solution from the solid, Anyhydrous Calcium Chloride, CaCl2. Make sure to include amounts and equipment you will use for the preparation.
The 650 nm/590 nm intensity ratio for tetraphenylchlorin is 7, while the ratio for tetraphenyl porphyrin is .45. Predict the 650 nm/590 nm intensity ratio for a sample that contains 98% tetraphenylporhyrin and 2% tetraphenylchlorin.
find the lowest temperature of vaporization and the highest temperature when there is liquid left over.a liquid mixture
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