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Considerning the electrons in the shells, subshells, and orbitals of an atom, state how many electrons have: of electrons
a) n=4, l=1, ml=-1 and ms=-1/2
b) n=4, l=1, and ml=-1
c) n=4 and l=1
d) n=4
Determine the molecular formula of the oxide of phosphorous when it is in its gaseous state.
A 115 mL sample of a 11.0 M ethylene glycol (rm C_2H_6O_2) solution is diluted to 1.40 L.What is the freezing point of the final solution? (Assume a density of 1.06 g/mL for the final solution.)
Can you name me 2-3 scientific problems in chemistry and their continuous mathematical models
Its activation energy is 262 kJ/mol. At 477 celcius its half life is 5 minutes. What is its half life at 527 celcius (in seconds)?
Calculate the molar concentration of HCl in a solution that has a specific gravity 1.185 and is 36.5% (w/w). Prepare from this bottle 1 L of 0.1 HCl solution. 25 mL of this solution titrated with 30 mL of NaOH.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 92% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
Draw the structural formula for 3-methylhexane and 2-butanol and identify the chiral carbon and the four "groups" attached to the chiral
In a coordination compound, which ion would you expect to have a higher coordination number with a bidentate nitrate group (NO3-), Co3+ or Ir3+? Why?
The expresssion for the freezing point depression of a solution relative to that of the pure solute is shown above. From solutions of known concentrations of p-dichlorobenzene in cyclohexane, you determine Kf, the freezing point depression constan..
Nitrogen from a gaseous phase is to be diffused into pure iron at 675 C. If the surface concentration is maintained at 0.2 % N, what will be the concentration 2 mm from the surface after 25 h? The diffusion coefficient for nitrogen in iron at 675 ..
Considering the combustion of propane, how many grams of O2 are needed to completely burn 32.1g of C3H8
when a current of 308 mA is used for 8h, what volume of fluorine gas at 298 K and 1 atm can be produced from a molten mixture of potassium and hydrogen fluoride
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