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Ammonia reacts with diatomic oxygen to form nitric oxide and watervapor. When 40.0g of ammonia and 50.0 g of oxygen are mixed and allowed to react, which is the limiting reagant? 4NH3 +5O2--> 4NO + 6H2O
Calculate the concentration of phosphoric acid if 25.00 ml reqires 76.00 ml of .560 mol/l to titrate it to the endpoint.
transferred from an oven (183°C) to 189 g of water at 23.2°C, into which it is immersed. The water and steel together reach a temperature of 27.9°C. What is the mass of the steel in grams
Draw the mechanism of acetone reacting with 2 equivalents of benzaldehyde. Use the arrow drawing convention to show all bond making
What concentrations of acetic acid (pKa = 4.76) and acetate would be required to prepare a 0.20 M buffer solution at pH 4.5? Enter your answer to two significant figures.
If 200 mL of 0.300 M Cr(NO3)3(aq) is added to 100 mL of 4.0 × 10^-4 M NaF(aq) at 25 degrees celcius, will a CrF3 precipitate form? For CrF3 in water at 25°C, Ksp = 6.6 × 10^-11.
Consider a solution formed by mixing 48.0 mL of 0.100 M H2SO4, 36.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 2 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
What volume in liters of 0.94 M KOH solution should be added to a 0.090 L solution containing 9.1 g of glutamic acid hydrochloride
Calculate the amount of heat required to raise the temperature of 72 g of H2O from 23 degrees celcius to 115 degrees celcius
The amino acid glycine is often used for biochemical buffers. The amino group of glycing can exist in a protonated form or as a free base (pKa 9.6).
A mixture of Ar and N2 gases has a density of 1.416 at STP. What is the mole fraction of each gas?
Determine the pH of a 0.62 M NH4NO3 solution at 25°C. The Kb for NH3 is 1.76 × 10-5.
Did the. Temperature oof the water rise or fall when the nh4no3 was added? Explain this in terms of heat ttransfer.
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