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Calculate the mass of silver chloride, AgCl, and dihydrogen monosulfide, H2S, formed when 85.6 g of silver sulfide, Ag2S, reacts with excess hydrochloric acid, HCl.
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 state to the n = 3 state
Heatite, Fe2O3 is an important ore of iron, the free metal is obtained by reacting hematite with carbon monoxide in a blast furnace. carbon diozide is formed in the furnace by paritial combustion of carbon, the reaction is Fe2O3 (s) + 3 CO (g) -->..
Methanol burns in oxygen to form carbon dioxide and water. Calculate Delta H rxn at 25 . = kj ?? 2) calculate Delta S rxn at 25 degree c = j/k?? 3) delta G at 25 degree C = ? kj?? 4) spontaneous
Consider an ideal gas with an absolute temperature of T1. To what temperature would you need to heat the gas to double its pressure?
The U.S. Navy has a system for communicating with submerged submarines. The system uses radio waves with a frequency of 76 s-1. What is the wavelength of this radiation in meters?
A solution containing 8.3 g of a nonvolatile nondissociating substance dissolved in 119.5 g of chloroform, CHCl3, and the solution has a vapor pressure of 511 torr. The vapor pressure of pure chloroform is 526 torr. Calculate the molar mass of the..
A sample of CH4 gas is observed to effuse through a pourous barrier in 5.08 minutes. Under the same conditions, the same number of moles of an unknown gas requires 8.63 minutes to effuse through the same barrier.
Determine the value of pH of given solutions that are (a) a solution that is 0.40 M CH3CO2H, (b) a 0.40 M CH3CO2H solution, (c) 0.20 M NaCH3CO2. And explain your answer too?
A gas sample containing 0.3525 moles of a compound is trapped in a 2.641 liter vessel on a manifold at a temperature of 28.4 oC. What is the pressure in the vessel,
A student prepares cyclohexene from cyclohexanol, but forgets to do the extractions. As a result the product contains some cyclohexanol. What peaks would you expect to see in the IR spectrum of this impure product?
A 4.5 g nugget of gold absorbed 276 j of heat. What was the final temperature of the gold if the initial temperature was 25 OC ? The specific heat of gold is 0.129 j/g OC.
Find the number of moles of the indicated species in (a) 6.84 g of B2O3 (b) 296 mg of Na2B4O7 10 H20 (c) 8.75 g of Mn3O4 (d) 67.4 mg of CaC2O4
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