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Give a brief explanation of the physics behind combustion. What happens on a molecular/chemical scale and approximately how much energy is released per reaction?
However, both qsolution and it can be either positive or negative numbers. Based on this a) If the solution cools down, is T a positive or negative number? Explain.
a student was asked to determine the percentage of the components of a mixture of potassium bromide kbr magnesium
A 100.00 mL buffer solution is 0.175 M in HClO and 0.150 M in NaClO. What is the pH after addition of 85.0 mg go NaOH?
Calculate the pressures in the flask in parts a and b (in torr) if the atmospheric pressure were instead 675 torr.
at 218degc kc 1.2 10-4 for the equilibrium shown below.nh4hss nh3g h2sgcalculate the equilibrium concentration of
The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 10 kt gold jewelry typically contains 41.666667% gold, 29.166667% silver
A reaction has a rate constant of 0.0591 sec-1, how much of the compound (in mol/L) is left after 5.03 sec, if there was 0.770 mol/L at the start
question 1 which of the following best summarizes the main causes of water pollution today?increased runoff driving
The second-order reaction 2 Mn(CO)5 Mn2(CO)10, has a rate constant equal to 3.0 x 10^9 M-1 s-1 at 25C. If the initial concentration of Mn(CO)5 is 2.0 x 10-5 M, how long will it take for 90.% of the reactant to disappear?
What volume in milliliters of a 0.5 solution of copper ll sulfate, CuSO4, is needed to react with an excess of aluminum to provide 11g of copper?
consider the titration of 50.00 ml of 0.1000 m hno2 ka 7.1bull10-4 with 0.1000 m naoh solution. what is the ph after
Organic chemists rely heavily on the spectroscopic methods of IR and NMR. Explain in great detail (that means more than 2 or 3 sentences) why the two methods have to be used in tandem to determine
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