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Explain how many electrons are present in the outer shell of boron in boron trifluoride (BF3) as well as of sulfur in (SF6).
Explain now the answer is 6 electrons in Boron and 12 electrons in Sulfur.
a calorimeter contains 27.0 ml of water at 13.0 circc. when 1.30 g of rm x a substance with a molar mass of 81.0 gmol
Explain what are the concentrations of H3Cit, H2Cit- and HCit2- in a sample of lemon juice that has a pH of 2.30 also a total concentration of the four citrate-containing species of .350 M? Suppose that [Cit3-] is 0.
A student prepared the Ni^2+ standar solution and obtained the following buret readings for solution #2, Calculate the concentration of Ni^2+ in the resulting solution.
Xenon can be the central atom of a molecule by expanding beyond an octet of electrons. Draw Lewis structure for the following xenon compound.
What are the empirical formula and the molecular formula of the compound.
exactly 1.0 l of hydrogen gash2is collected over water at 292 k under a total pressure of 152torr. if the vapour
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Briefly comment on the effect of solution concentration on cell potential. Note that E knot is measured using 1M solutions,
a 2.10-g sample of a large biomolecule was dissolved in 14.0 g of carbon tetrachloride. the boiling point of this
Intially the vessel contains 3.0 moles of methane, 3.0 moles of xenon, and 4.0 moles of oxygen. What would the partial pressure of methane be if 2.0 moles of methane are added to the vessel? Assume that the volume and temperature of the vessel rem..
A molecule can be polar or nonpolar depending upon the nature of the bonds and the shape of the molecule. For a molecule that has different outer atoms the molecular symmetry will decide the polarity.
A sample of C2H2 contains 3.02 moles of C (12.0 g/mol). How many moles of C2H2 (26.04 g/mol) are present
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