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A zero-order reaction has a constant rate of 2.50×10-4 M/s . If after 60.0 seconds the concentration has dropped to 5.00×10-2 M, what was the initial concentration?
a metal object with a mass of 19g is heated to 96 degrees C, then transferred to a calorimeter containing 75 g of water at 18 degrees C. The water and metal object reach a final temperature of 22 degree C.
The titration is monitored with a potentiometer using a SCE reference electrode (Eref= 0.241V). the solution is buffered at ph=4.00.
identify the species formed in the first step in the acid-catalyzed dehydration of 1-Methylcyclohexanol
List the following aqueous solutions in order of increasing boiling point: 0.121 m C6H12O6 (glucose), 0.042 m LiBr, 0.052 m Zn(NO3)2
Which of these reactions are unimolecular and elementary, which are bimolecular and elementary, and which are not elementary?
When 0.100 g of graphite is burned completely in a bomb calorimeter (heat capacity = 3.344 kJ/C), containing 3000 g of water, a temperature rise of 0.21C is observed. What is deltaE for the combustion of graphite. The specific heat of liquid wa..
Determine the ratio of the work delivered by the turbine to the work consumed by the pump. Assume the entire cycle to be reversible and the heat losses from the pump and the turbine to be negligible.
a sample of propane, contains 17.7 moles of carbon atoms. How many total moles of atoms does the sample contain.
you wish to prepare a buffer solution containing nan3 and hn3 hydrazoic acid. you have to prepare the solutions first.
The element lithium has two naturally occurring isotopes, 7Li (isotopic mass 7.0160 amu, abundance 92.5 %) and 6Li (isotopic mass 6.0151 amu, abundance 7.50 %). Calculate the atomic mass of lithium.
The activity coefficients of the Mg2+ and Cl- ions in this solution. The mean ionic activity coefficients of these ions.
Determine the activation barrier for the reaction. What is the value of the rate constant at 15
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