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Describe briefly four types of batteries. In your description, include the redox reactions involved
If 141 mL of wet H2 is collected over water at 24°C and a ba?rometric pressure of 738 torr, how many grams of Zn have been consumed.
A student analyzed an antacid tablet from a bottle containing 120 tablets purchased for $2.79. The mass of the tablet was 1.247 grams. What is the cost of one antacid tablet in cents/tablet.
The orbital energy of any atomic species depends on factors other than the principle quantum number n and any given energy level in H is more stable than the same level in H+.
Consider the reaction CuSO4(s) ! CuO(s) + SO3(g) . If G? = -14.6 kJ at 950?C for this reaction, calculate G for an SO3(g) pressure of 50 bar at this temperature.
If the partial pressure of oxygen drops below 100 , passengers become drowsy. If this happens, oxygen masks are released. What is the total cabin pressure at which oxygen masks are dropped?
The enthalpy of formation of compound X is -612 kJ/mol, and the sole product of its combustion has a enthalpy of formation of -671 kJ/mol. What is the enthalpy of combustion of compound X?
A flask containing 450 mL of 0.47 M H2SO4 was accidentally knocked to the floor. How many grams of NaHCO3 do you need to put on the spill to neutralize the acid according to the following equation?
An air sample contains 0.032% CO2 (by mole). If the total pressure is 758mm Hg, what is the partial pressure of CO2
Calculate the P-Cl bond energy, given the following reaction and the average bond dissociation energy of chlorine as 240kJ/mole.
Calculate the pH of a 0.130 M solution of aniline C6H5NH2. The Kb of aniline is 4.30 x 10-10.
Photochemical chlorination of heptane gave a mixture of monochlorides containing 15% 1-chloroheptane. What other monochlorides are present? Estimate the percentage of each of these additioanl C7H15Cl isomers in a monochloride fraction.
Calculate a lattice energy for (in kilojoules per mole) using the following information.
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