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Question- The reaction 2NO2?2NO+O2 has the rate constant k = 0.75M^?1s^?1.
a. If the initial concentration of NO2 is 8.90×10?2M , how would you determine how long it would take for the concentration to decrease to 2.60×10?2M? (Seconds)
I want you to elucidate the chemistry in this above problem.
A 20 mg sample of zinc is heated at 10 K min-1, and the peak on the DSC trace has an area of 0.371 W K. Calculate the latent heat of melting of zinc (in kJ mol-1)?
At high pressures, Ne behaves as an imperfect gas. In the range 300 K to 500 K the equation of state for one mole of Ne (g) can be written as : PV = RT + BP where B is a constant.
Question- Part 1) Water can be made by combining gaseous O2 and H2. If you begin with 1.5 L of H2(g) at 360 Torr and 23°C, what volume in liters of O2(g) will you need for complete reaction if the O2(g) is also at 360 Torr and 23°C
Nitrosyl bromide, \rm NOBr, is formed in the reaction of nitric oxide, \rm NO, with bromine, \rm Br_2: \rm 2NO(g)+Br_2(g)\rightleftharpoons 2 NOBr(g) The reaction rapidly establishes equilibrium when the reactants are mixed.
determine the amount of heat energy needed to convert 255g of substance x from 40 degrees to 300 degrees
Problem- Consider a solution that contains 63.0% R isomer and 37.0% S isomer. If the observed specific rotation of the mixture is -41.0° 1) What is the specific rotation of the pure R isomer?
The neutrons from one treatment source have an average velocity of 3.4 x 10^7 m/s. If the velocities of the individual neutrons are known to within 2% of this value, what is the uncertainty in this position of one of them
Diethyl ether C4H10O(l), a flammable compound that has long been used as a surgical anesthetic has a structure
Calculate the pH of each of the following buffered solutions. 0.10M acetic acid/0.25M sodium acetate
calulate the molarity of acetic acid in a venegar sample knowing that 5.00mL of vinegar requires 43.50mL of 0.105 M NaOH to reach the phenolphthalein endpoint in a titration
if the initial [H2] = 0.200M, [I2] = 0.200M and Keq = 55.6 at 250°C calculate the equilibrium concentrations of all molecules.
The freezing-point depression of a 0.100 m (molality) MgSO4 solution is 0.225 degrees Celsius. Determine the experimental van't Hoff
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