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What is a "resonance structure". Can there be more than 1 resonance structure in a molecule? Explain.
a 3.50 g sample of solid mgoh2 was treated with 50.0 ml of 0.500 m h2so4aq. after the reaction was over some of the
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
You will then make a Kool-Aid solution by dissolving the powder in an entire packet of lemon-lime Kool-Aid in 250.00 mL solution. You find the powder in a packet of lemon-lime Kool-Aid has a mass of 3.629 g.
Compute the individual concentrations of HMR and MR in a mixture measured with absorbency 0.604 at 520 micrometers and absorbency 0.727 at 425 micrometers.
What fragmentation would give rise to the peak at m/z 45 in the Mass Spectrum. Loss of hydroxyl group.
Ammonia gas decomposes according to the equation:2NH3(g) N2(g)+ 3H2(g) if 15.0L of nitrogen is formed at STP, how many liters of hydrogen will be produced (Also measured at STP)
Phenol is a weak organic acid with Ka=1.0x10^-10. How many grams of phenol do you need to add to 500. mL of water to make a pH=5.75 solution
determined the percent Co by converting your product into a blue-violet colored Co complex and measuring the absorbance in the Spec 20 instrument. What is the formula of this blue-violet complex?
an ideal gas is in a cylinder with a volume of 250.0 ml at a temperature of 25 ordmc and a pressure of 700 torr. the
What is the minimium wavelength of light necessary to ionize an atom of sodium? what is the minimum wavelength of light necessary to ionize a mole of sodium atoms?
From the following chemical equation determine how many grams of Ca(OH)2 you would need to react with 6.26 moles of HBr. How many grams of water will be made
an aluminum rod at 55.0 degrees celsius is put into 399 grams of water at an initial temperature of 20.0 degrees celsius. If the final temperature of water and rod are 30.0 degrees celsius, what was the mass of the aluminum rod?
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