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a) What must be the velocity of electrons if their associated wavelength is to equal the longest wavelength line in the Lyman series?
b) Comment on the feasibility of an experimental measurement of this wavelength.
32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 49.1 g of 32P, how much 32P was present 7.00 days ago
P4(s) + 6F2(g) --> 4PF3(g) How many grams of fluorine are needed to react with 6.20g of phosphorus?
What is the cell potential for the reaction Mg(s)+Fe2+(aq) -> Mg2+(aq)+Fe(s) at 63 degrees celsius when [Fe2+] = 3.50M and [Mg2+] = 0.310M. Express your answer to three significant figures and include the appropriate units.
Which of the following accurately lists compouds in order of increasing solubility in water? A. LiCl2, Br2, O2, methanol (CH3OH) B. methanol (CH3OH), LiCl2, O2, Br2 C. O2, Br2, LiCl2, methanol (CH3OH) D. LiCl2, methanol (CH3OH), Br2, O2
Select each side of the mass balance equation for an Fe3(PO4)2 solution where the existing species are Fe2 , PO43-, HPO42-, H2PO4-, H3PO4, FeOH?
Elliptical holes estimate the angle of entry : Cos A bullet hole in a wall at a crime scene is elliptically shaped. The loner dimension is 20 mm and the shorter dimension is 14 mm. What is the angle of entry?
How many grams of dry need to be added to 1.50 of a 0.600 solution of ammonia, , to prepare a buffer solution that has a of 8.59? for ammonia is.
Using 1-Propanol as your only source of carbon, propose a synthetic route for 2-methyl-1,3-pentanediol.
what mass of water must be used to dissolve 20.0 grams of ethanol, C2H5OH, to prepar a 0.0500 molal solution of ethanol
calculate the air velocity necessary to suspend 1.5 cm (screened) particles of shredded aluminum; ps = 2.70 g/cm^3 and r= 0.0012 g/cm^3.
Sodium bicarbonate undergoes thermal decomposition according to 2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) What happens when 0.20 atm of argon gas is added 1. [CO2] increases 2. [CO2] decreases 3. [CO2] stays the same
H--C(triplebond)C--H Acetylene. The overall rate law for the polymerization is first order with respect to both acetylene and the catalyst used for the reaction. What, therefore, is the slowest step of an addition polymerization: initiation, propa..
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