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Write the electron configuration for the ground states and the valence states of Be, B, C and N atoms so that each one can form the maximum number of 2c-2c (ordinary electron-pair) bonds.
Calculate the solubility (in M units) of ammonia gas in water at 298 K and a partial pressure of 7.50bar . The Henry's law constant for ammonia gas at 298 K is 58.0 M atm and 1 bar = 0.9869 atm.
What is the concentration (in M) of the chloride ion when 16.2 mL of a 0.542 M solution of barium chloride is combined with 18.4 mL of a 0.619 M solution of aluminum chloride? Assume the volumes are additive.
Which solvent displayed the strongest propensity to encourage keto-enol tautomerization. CHCl3, DMSO, CH3OH? Or does this propensity more closely follow the type of solvent it falls under (such as nonpolar, polar aprotic, or polar protic).
you have pure beta-d-glucopyranose of 100 grams nearly it was dissolved in an ethanolwater combination with the
Suppose you have a mixture of 2 substances. You know one of the substances is either 2-chlorobenzoic acid or diphenyl acetic acid. The second substance is either p-dibromobenzene or acenaphthylene
A 23.7-g sample of ethylene glycol, a car radiator coolant, loses 906 J of heat. What was the initial temperature of the ethylene glycol if the final temperature is 32.5 degrees Celsius (c of ethylene glycol=2.42 J/g*K)
The Rb-Sr data given below are for whole-rock samples from amphibolite metamorphic facies of theLewisian gneiss complex in Scotland (Moorbath et al., 1975), and the Sm-Nd data are for whole-rocksamples from granulite metamorphic facies of the same..
A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. what is the final volume of the gas?
Given an unknown monoprotic(one hydrogen) acid. Make a 100 mL solution with 20% by volume. (mix 20 mL acid with 80 mL water) and titrate with NaOH. You must find the concentration of it the weak acid.
Hydrogen atoms are excited by a laser to the n=4 state and then allowed to emit. What is the maximum number of distinct emission spectral lines that can be observed from this system? Calculate the wavelength of the 4 to 1 transition in m.
A toothpaste contains 0.24 by mass sodium fluoride used to prevent dental caries and 0.30 by mass triclosan , a preservative and antigingivitis agent. One tube contains 125 toothpaste.
Calculate the osmotic pressure of each starting solution and that of the mixture, assuming that the volumes are additive and that both salts dissociate completely into their component ions
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