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The compound X2Y is only partially dissociated in water solution to form X and Y2- ions. A 0.0100 m solution is found to freeze at -0.040°C. Calculate the apparent percent dissociation of X2Y. Kf for water = 1.86°C/m.
i) 42%
ii) 56%
iii) 58%
iv) 79%
v) 85%
At 7645 oC, Keq = 1.12 for the reaction: 1/2 N2(g) + 1/2 O2(g) ? NO2(g) (a) What is the value of Keq for the reaction NO2(g) ? 1/2 N2(g) + 1/2 O2(g)? Keq = . (b) What is the value of Keq for the reaction N2(g) + O2(g) ? 2 NO2(g)? Keq = . (c) What ..
1.0 ml of a 3.60 x 10-4 m solution of oleic acid is diluted with 9.00 ml of petroleum ether forming solution a. then
An air stream's humidity is increased by combining it with a stream of water as shown below (hr stands for relative humidity). The water evaporates and increases the moisture content of the air stream. Determine the mass flow rate of stream B
the elementary chemical reactiono clo--gtcl o2is made pseudo-first order in oxygen atoms by using a large excess of
Air has a density of about 1.2 kg/m3. One standard atmosphere (1 atm) is about 105 Pa. Assuming that the density of air remained constant as altitude increased, how high would the Earth's atmosphere have be to create a pressure of 1 atm
A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s) 2 Hg(l) + O2(g) Hrxn = 181.6 kJ (a) How much heat is needed to decompose 504 g of the oxide? kJ
Calculate the molarity of the solution produced by mixing the following substances. (Assume that the volumes are additive.) (a) 40.0 mL of 0.160 M NaCl and 65.0 mL of 0.133 M NaCl
compute the distance r in Angstroms at which the attractive portion of the L-J potential has diminished to an (absolute) value of RT (T=298K).
To what volume should you dilute 55 mL of a 12.0 M \rm H_2SO_4 solution to obtain a 1.55 M \rm H_2SO_4 solution
A mixture of gases contains 10.20g of N2 , 1.80g of H2, and 8.15 of NH3 . The total pressure of the mixture is 1.90atm. What is the partial pressure of N2? What is the partial pressure of H2. What is the partial pressure of NH3.
What is the number (actual count) of [H+] in 10 mLs of water at a specific pH (like pH 9, 7, 2 etc.)
aluminum has a density of 2.70g/cm3. how many cubic centimeters will 200.0 grams of aluminum occupy?
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