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Automobile airbags inflate when sodium azide, NaN3, decomposes explosively to form the elements, Na (s) and N2 (g). How many grams of NaN3 are needed to produce 5.00 g of nitrogen gas? (Molar masses, NaN3 = 65.02 g/mol, Na = 22.99, N2 = 28.02 g/mol)
each successive hydrogen is more easily substituted until the trihalo species is obtained. Explain
Which of the following would result in an artificially HIGH (>100%) yield for carbon dioxide? Spilling some of the reaction mixture
A chemistry student needs to weigh out exactly 1.19 mol of Mg(HCO3)2 to perform a laboratory experiment. How many grams should he weigh out?
methylamine (CH3NH2 Kb=3.6x10^-4) with 25.0 mL of 0.10 M benzoic acid (C6H5COOH Ka=6.3x10^-5), will the resulting solution be acidic, basic or neutral?
Write a balanced equation for the diazonium salt 1-naphthol and aminobenzenesulfonic acid (para structure). Draw a possible structure
calculate the potential of a platinum electrode immersed in a solution that is prepared by mixing 25 ml of 0.0832 M V2(SO4)3
what does the sign of the standard reduction potential indicate? what does the magnitude of the standard reduction
A weather balloon has a volume of 450 L when filled with helium at 45oC to a pressure 0.80 atm. What is the new volume of the balloon in an atmosphere where the pressure
Assuming levels of atmospheric CO2 are 390 ppm CO2, what is the pH of rainwater in equilibrium with the atmosphere for the pre-industrial atmospheric CO2 concentration of 280 ppm,v
If the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base, and the pH of the solution is 3.5, what is the pKa of the acid?
A 0.130-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
The strongest line in the visible region of the mercury spectrum has a wavelength of 435.8nm. What color does the light appear. What is the energy of a photon associated with this line.
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