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Depict Lewis structures of the four molecules and/or ions with the formulas given below and figure out which two of these are isoelectronic with each another. Species which are isoelectronic have the same number of atoms, the same total number of electrons, the same number of valence electrons, and the same valence electron structure (single and multiple bonds and lone pairs in same places), however need not have the same distribution of formal charges on atoms.
CN- and Cl2 andN2 and OCl-
a) CN-and N2 are isoelectronic.b) N2and Cl2 is isoelectronic.c) OCl-and Cl2 are isoelectronic.d) CN-and OCl- are isoelectronic.e) N2and OCl- is isoelectronic.
A solution containing HNO2 has pH=3.40 at equilibrium. Calculate the amount of HNO2 present in 575ml of this solution Ka=0.0004 answer is 0.01 g of HNO2
Explain how many mL of a 2M solution of boric acid must be added to 600mL of a solution of 0.01 M sodium borate in order to bring the pH to9.45 (pKa boric acid: 9.24)
Two hydrocarbons A and B each contain six carbon atoms and one C=C. Compound a can exist as both E and Z isomers but compound B cannot . however, both A and B on catalytic hydrogenation give only 3-methylpentane. draw structures and give suitable ..
the compound x2y has a molar mass of 110.27 gmol. the ratio of xy by mass in the compound is 2.44 1. what is the
Depict that the rate at which shaft work is obtained or needed for a reversible change of state in a closed system at constant internal energy as well as volume is equal to the negative of the product of the temperature as well as the rate of chan..
what is the dosage of quinine when a 170lb adult takes a 400.0 mgtablet? Express in ug quinine per kg of body weight.
51.1 g of a substance X dissolves in enough water to make 0.754 L of a 0.579 M solution. Calculate the molar mass of X in g/mol
what is the name and formula for a compound with a composition percent of 77.7% Fe, 22.3% O and a molar mass of 71.85
Hydration of alkynes (via oxymercuration) gives good yields of single compounds only with symmetrical or terminal alkynes. Draw the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of HgSO4 and H2SO4.
If the reaction of 25.0 mL of 1.0 M HBr and 35.0 mL of 1.0 M KOH produces 1.45 kJ of heat, what is the change in entalpy of HBr + KOH per mole of water formed
How many grams of MgCl2 would be needed to prepare 1.000 L of a solution that is 236 ppm in Mg2+ ions? Note: there is one Mg2+ ion in every MgCl2. Report your answer to the correct number of sig figs.
Modern instrumental techniques are capable of detecting lead in a milliliter sample at picomolar concentration. How many moles of lead are in the sample
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