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Ammonium cyanate reacts in water to form urea. Utilizing the rate law for the reaction, forecast the amount of ammonium cyanate remaining after 90.0 minutes from a starting amount of 0.555 mol/L.
Rate law for the reaction: NH4NCO->(NH2)2CO rate = k[NH4NCO]^2.
The value of K = 0.00511 L/mol min.
An aqueous antifreeze solution is 48.5% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.062 g/cm3. Calculate the molality, molarity and mole fraction of ethylene glycol
consider the reaction 4nh37o2--gt 4no26h2o. at a certain instant the initial rate of the disappearance of oxygen gas is
An odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas.
Suppose you could buy a bottle of water claiming that it contains 76 ppm oxygen. The law constant for water is k = 1.2 x 10 -3 M atm -1. What pressure would the water have to be bottled under to obtain the claimed concentration
Discuss two ways that ammonium compounds decompose when they are heated. What chemical reaction is involved in the thermal decomposition of ammonium persulfate?
Exactly 5.02 grams of an unknown gas was sealed in a 3.0 L flask at 37.0oC and a pressure of 1.25 atm. Which one of the following is most likely to be the unknown
A star is 3.28 x 1014 km from Earth. How many days does it take for light to travel from the star to Earth?
By how much does the chemical potential of carbon dioxide at 310K an 2.0 bar differ from its standard value at that temperature
What mass of carbon dioxide is produced by the complete combustion of 5.50 grams of hexane, C6H14
Write the structures (or name the structures) for the major monobromination products that would be formed from each of the following substrates used. Explain your predictions.
what is the concentration (in mole/L or M) of Cu2+ and NO3- in the final solution. Remember your significant figures. If there is an impurity of Cu2+ in the water you are using to perform the dilutions, what type of error is this associated with t..
An avergae 70-kg adult human contains 170g of potassium. 0.0118% of naturally occuring potassium is potassium-40, which is a beta emitter with a half life of 1.28x109 years. What is the total activity (in counts per minute) of a human being, due s..
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