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A certain first-order reaction (A to products) has a rate constant of 4.20×10-3 at 45 degrees celcius. How many minutes does it take for the concentration of the reactant,[A] , to drop to 6.25 of the original concentration?
A certain reaction has an activation energy of 46.80 kJ/mol. At what Kelvin temperature will the reaction proceed 3.50 times faster than it did at 341 K
Calculate k, Calculate also how long it would take for half of A to react. assume pseudo first order with k'=k[OH-], since [OH-] is in great excess.
If the caffeine concentration in a particular brand of soda is 3.35 mg/oz, drinking how many cans of soda would be lethal?
The complex formed between Cu(I) and 1,10 phenanthroline has a molar absorptivity of 7000 L cm-1 mol-1 at 435 nm, the wavelength of maximum absorption.
Assuming that a chemical reactions doubles in rate for each 10 C Temperature increase, by what factor would the rate increase
Which of the following substances, when added to a saturated solution of AgCO3, will increase the solubility of AgCO3 in the solution?(select all that applies)
A 195mg sample of a non-electrolyte isolated from throat lozenges was dissolved in enough water to make 10.0mL of solution at 25 degrees Celsius. The osmotic pressure of the resulting solution was 4.83atm. Calculate the molar mass of the compound.
If 3.55 g of CuSO4 are dissolved in 925 mL of 0.30 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium Kf, Cu(NH3)42+= 1.1 x 1013 . Assume that most of the Cu2+ is converted to the complex since K is a very large number...
A student dissolves 7.39 g of and unknown protein in 0.286 l of water at 300k. She measures the osmotic pressure to be 3.932 x 10^-3 ATM.
how many Liters of water can be made from 34 grams of oxygen gas and 6 grams of hydrogen gas at STP? what is the limiting reactant for this reaction?
In coffee, how much would the boiling point (in C) of the water be raised by the addition of 0.2 g of caffeine (C8H10N4O2) to 5.0 L of water in making this so much coffee
The solubility of KNO3 is 38 g/100 g H2O at 20 degrees Celsius and 1.50 times 100 g/100 g H2O at 70 degrees Celsius. A solution is prepared by mixing 45 g of KNO3 in 35 g H2O at 70 degrees Celsius. Will all of the potassium nitrate dissolve at 70 ..
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