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For a first-order reaction, the half-life is constant. It depends only on the rate constant and not on the reactant concentration. It is expressed as: t1/2 0.693/k. For a second order reation, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as: t1/2=1/k[A]0.
a.) A certain first-order reaction (A---> products) has a rate constant of 6.00×10?3 s-1 at 45 degrees C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration?
B.) A certain second-order reaction (B---> products) has a rate constant of 1.70×10?3 at 27 degrees C and an initial half-life of 288s. What is the concentration of the reactant B after one half-life?
Predict the products and show the reaction mechanism for the acid catalyzed Fischer esterification reaction between ethanol and acetic acid (CH3CO2H)
The electronegativty for both sulfur and carbon is 2.5. Therefore the compound CS2 would be expected to A) be ionic with C as the anion
If 545 mL of oxygen gas is collected at 21°C and 745 mmHg , what is its volume at STP?
List three distinct metabolites that act as allosteric regulators of PFK and indicate the logic of how they affect PFK activity
Hydrofluric acid in an aq solution has a molar mass of 20.01g/mol. A chemist dissovles a .2001g sample in 20.0 mL and titrates it
Determin whether each of the following equation is balanced or unbalanced: a) PCl3(l)+Cl2(g)--->PCl5(s), b)CO(g)+2H2(g)--->CH3OH(l), c)2KClO3(s)--->2KCl(s)+O2(g), d)Mg(s)+N2(g)--->Mg3N2(s).
What is the Lewis structure of the covalent compound that contains one nitrogen atom, one hydrogen atom, and one carbon atom? Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
If 1.00 g sodium bicarbonate and 1.00 g citric acid are allowed to react, how many grams of carbon dioxide will form?
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
For the reaction above, how much would be liberated by the combustion of 5.00g of iron metal in excess oxygen.
All living things contain carbon. Most of this carbon is stable carbon-12. However, a small percentage will be carbon-14, a radioactive isotope of carbon that decays with time. As living things eat and breath, carbon is constantly recycled and the..
then we cooled in an ice bath. then we washed it with water. and then added bicarbonate to netralize any acetic acid or sulfuric acid present. then we did an an extraction.
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