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Consider one of the resonance structures of the nitrate ion,NO3‾. What is the formal charge of one of the oxygen atoms singly-bondedto nitrogen?
In what ways may the rotational and vibrational spectra of molecules change as a result of isotopic substitution
the excess I3- was titrated with 50.00 ml of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
Calculate the ionic strength of a solution that is 0.08 M in La(NO3)3 and 0.06 M in Fe(NO3)2.
a volume of 100 litres of is at room temperature that was twenty two degree celsius initially. a cooled steel rod at
Which of these gases will have the greatest density at the same specified temperature and pressure. A) H2 B) CClF3 C) CO2 D) C2H6 E) CF4 8. What is the molar mass of Freon-11 gas if its density is 6.13 g/L at STP
Liquid butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 31.2 g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas. The heat of vaporization of butane is 21.3 kJ/mol.
a student mixed 5.00 ml of a nickel2 chloride solution with 5.00 ml of .100m sodium phosphate and a precipitate formed.
In a chemical cold pack, two substances are kept separate by a divider. When the divider is broken, the substances mix and absorb heat from the surroundings. The chemical cold pack feels cold.
500.0 mL of 0.170M NaOH is added to 585 mL of 0.200 M weak acid (Ka=2.66*10^-5) what is the pH of the resulting buffer. HA(aq) + OH(aq) ---> H20(l) + A^- (aq)
How many grams of nickel would be electroplated by passing a constant current of 7.2 A through a solution of NiSO4 for 90.0 min
assume that rubbing alcohol of 1.02 grams evaporates from a 70.0 nbspgrams of aluminum block. aluminum block is at 25
a sealed balloon is filled with 2.20 l of helium at 23degc and 1.00 atm. the balloon rises to a point in the atmosphere
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