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The work function of silver is 7.59x10^-19J. what is the longest wavelength of electromagnetic radiation that can eject an electron from the surface of a piece of silver?
A major source of sodium metal is produced as a result of electrolysis of molten sodium chloride. What magnitude of current is required to produce 1.0 kg of sodium metal in one hour
The mass of the tablet was 0.162 g. What percent of calcium carbonate was in the tablet?
Before developing the dead-weight gauge, he worked in a mine shaft, and used a mercury manometer for measurements of pressure to more than 400 bar. Estimate the height of the manometer required.
The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 355g of pure Cu
The frequency of electromagnetic radiation required to promote an electron from n=2 to n=4 in a Bohr hydrogen atom is
The mixture was stirred, causing all of the sample to dissolve. The excess HCl in the solution required 94.9 mL of 0.128 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
The rate of a reaction increases with increasing concentrations of reactants because you have more collisions occurring in a given time period. The rate of a chemical reaction is inversely proportional to the temperature.
Two of the following ions depend on their conversion into a gas for detection. What are the 2 ions? The two ions will form an ionic compound.
A 250-L tank is evacuated and connected to a 50.0-L bulb filled with compressed argon. After they are joined, the pressure in the bulb falls to 2.20 atm.
Why are the products attached to C3 of 1,4 pentadiene more acidic than the methyl hydrogen atoms of propene? Maybe you can help me with this one. Are the C3 atoms more acidic because there is more s character involved with the atoms and as the s ch..
Multiple choice questions in Radioactive Decay - electron emitted from the nucleus during some kinds of radioactive decay is known
Phosphorus, P, is combined with flourine F2, to give a gaseous compound with the formula PFx. If you start with 2.982 grams of P and isolate 12.129 grams of PFx, what is the value of x?
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