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Calculate the molar concentration of OH - ions in an 1.43 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
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How much will the temperature change when 3.0 g of tooth enamel (specific heat = 0.18 cal/g C) absorbs 0.80 cal of heat energy?
A sample of CaCO 3 (s) is introduced into a sealed container of volume .654 L and heated to 1000 K until equilibrium. The reaction is . K p for the reaction is3.9*10 -2 at this temperature. Calculate the mass of CaO(s ...
You are required to read the following case study and prepare a Project Feasibility Study and Timeline based on the information contained in the case study. Residential Duplex Development Project You own a real estate ...
A sample of gas in a cylinder has an initial volume of 56.0 L , and you have determined that it contains1.60 moles of gas. The next day you notice that some of the gas hasleaked out. The pressure and temperature remain t ...
How is vacuum filtration completing the purification of your sample? Where are the impurities at this point? For a recrystallization lab in organic chemistry
The solubility of silver sulfate, Ag2SO4, inwater has been determined to be 8.0 g/L. What is the solubility in0.37 M sodium sulfate,Na2SO4?
Magnesium metal(0.100 mol) and a volume of aqueous hydrochloric acid that contains0.500 mol of HCl are combined and react to completion. How manyliters of hydrogen gas, measured at STP, are produced? Mg(s) + 2HCl(aq) --- ...
A photon of wavelength 200 nm strikes the surface of a metal causing an electron to be ejected with kinetic energy of 4.3 x 10-19 J. What was the threshold frequency of the metal?
If liquid is at or above it's flash point, the flame spread rate is fast, and the entire pool is engulfed within seconds. In such a case, the liquid is already evaporating sufficiently to reach the lower flammability lim ...
What was the initial energy level of an electron if it was excited by a photon of wavelength 38.9µm and jumped to an energy level of 10?
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