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A 7.3648 g sample of an oxide of mercury, when heated in a stream of hydrogen, produces Hg() and 0.6126 g H2O. What is formula for the compound?
What are the products of reaction of methyl benzoate, benzoic acid, benzaldehyde, and benzophenone with an excess of a Grignard reagent, RMgBr?
What is the mole fraction of each component if 3.9 g of benzene (C6H6) is dissolved in 4.6. Assuming that this mixture is ideal, that is, it follows Raoult's Law, what is the partial vapor pressure of benzene in this mixture at 50 C
Explain why corresponding phosphorus and arsenic compounds resemble each other more closely than they do nitrogen compounds
Consider the situation in which 1.60 mL of an aqueous CuSO4 solution of unknown concentration is diluted to a volume of 10.00mL.
Using pH-based arguments only, why do scientists use phosphate-based bufers instead of buffers made using acetic acid
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L^-1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L^-1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass..
What is the pH of a buffer solution that is 0.255 M in lactic acid and 0.333 M in sodium lactate? The Ka of lactic acid is 1.4 × 10-4.
How many energy sublevels are contained in each of the hydrogen atom's first three energy levels
Question- The equilibrium constant Kp for the dissociation of N2O4(g) to 2NO2(g) is 1700 at 227C degree. Predict its value at 27C degree. For this reaction, Change of H is 56.8KJ/mol.
A star is estimated to have a mass of 1 multiplied by 1036 kg. Assuming it to be a sphere of average radius 6.5 multiplied by 105 km, calculate the average density of the star in units of grams per cubic centimeter.
Carbonyl fluoride, \rm COF_2, is an important intermediate used in the production of fluorine-containing compounds.
What were the principal quantum numbers of the initial and intermediate excited states involved?
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