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A certain first-order reaction has a rate constant of 2.95×10-2s-1 at 22°C. What is the value of k at 61°C if Ea = 80.0kJ/mol ?
The balences in the lab can weigh a maximum of 220.000 g at once. if a beaker has a mass of 86.4329 g, what is the maximum volum of water
When the following two solutions are combined, a precipitate forms. CaCl2(aq) Rb3PO4(aq)Which of these is TRUE concerning the total ionic equation for the process
a gaseous mixture of and contains 34.8 nitrogen by mass. what is the partial pressure of oxygen in the mixture if the
Would expect the percent error in the solid density to be higher or lower than the percent error in liquid density. Explain why
react ammonia with a halogenated alkane, will you get only one organic product? Why or why not?
A chemistry student needs of 40 ml chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48g x cm^-3 . Calculate the mass of chloroform the student should w..
when oxygen is in use in hospital room,no smoking signs are usually posted prominently. Explain.
calculate the fraction of methyl isonitrile molecules that have an energy of 160.0 kj or greater at 510k and 514 k.
A 25.95 -g sample of methanol at 35.6°C is added to a 38.65-g sample of ethanol at 24.7°C in a constant pressure calorimeter. If the final temperature of the combined liquids is 28.5°C and the heat capacity of the calorimeter is 19.3 J/°C, determi..
Write a balanced equation for the reaction of NaCH3COO and HCl. Express your answer as a chemical equation.
A certain solvent has a normal freezing point of 1.72 ° C, and a freezing point depression constant of 5.07 ° C/m. What is the molality of a solution in
What volume of a 35.0 mM solution of propionic acid is required to supply
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