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K-40 has a mass of 39.963998 and Ar-40 has a mass of 39.962383. What is the energy implied by the mass defect? If this energy is carried away in a single photon, what is its wavelength? To what part of the electromagnetic spectrum does this correspond
How many grams of aspirin were lost in the washing process you used to purify your product, assuming you used 50mL of water for washing? The solubility of aspirin in water is 0.33g per 100mL at room temperature.
What is the pressure in a 65.0L cylinder filled with 0.235 moles of nitrogen gas at a temperature of 105K.
the equation of line determined from a Beers law plot is y=0.195x+0.4, what is the resistance of an unknown water sample if the assumed concentration is 1.8ppm. please show your work.
Give the name of the most probably side product with the high melting point. d. Explain, with the aid of a mechanism, the role of H2SO4 in the reaction
Description of Chemistry - Other, What is meant by Molality of a solution and Solute particles? Define. How many solute particles are there in 1m solution containing these substances in one kg of water?
what molecule would give the following mass spec data? m/z =15, 29, 43, 57 provide the dominate peaks in the spectrum. the m/z =57 (m-29) is the base peak. and the mz = 43 and 29 ions are also abundent.
2C4H10 + 13O2 → 8CO2 + 10H2O A. How many moles of O2 are needed to react with 3.75 moles of C4H10 ? B. How many grams of CO2 result when 85.5g of C4H10 react ?
Chemical reaction calculations, 1. Unbalanced equation SOCL2(1) + H2O(1) --- SO2(g) + HCl(g). How many molecules of H2O can 35.0 grams of thionyl chloride remove?
A solution is initially 2.5 x 10-3 M in Cu+ and 2.5 x 10-3 in Pb 2+. Iodine ion is gradually added to the solution. Determine the concentrations of Cu+, Pb +2, and I- at the point of maximum separation. The solubility products of CuI and PbI2 are ..
How many milliliters of 0.121 M H2SO4 are needed to neutralize 0.220g of NaOH? If 42.5mL of 0.220 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?
Perform a degree of freedom analysis and show that all of the unknowns can be solved.
What independent equations/relations can you write for thisprocess? What is the flow rate of the inlet water stream? (Inkg/hour)
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