For the reaction 2 H2S(g) + 3O2(g) ---> 2H2O(g) + 2SO2(g), the initial rate of consumption for O2 is 0.0471 M/s for the first 46 seconds. What is the concentration of H2O after 46.0 seconds?
The zero order reaction 2N2O→2N2+O2 has the rate constant k of 7.20×10−3 molL s. If the initial concentration of N2O is 0.891 molL, what is the concentration of N2O after 2.00 seconds? Your answer should have three significant figures (three decimal places).
We launch, to the left, at 15 m / s, a mass of 2 kg, attached to a spring whose elastic constant is 98N / m. The mass is launched from the position xo = + 3m (i.e. three meters to the right of its equilibrium position). a. What will be the oscillation period? b. Where will the mass be three seconds later? c. When will the mass be 50 cm to the left of its initial position for the...
7) The rate constant for the reaction 2N2O5(g) 25°C 4NO2(g) +O2(g) is k = 3.38x10-5/s at a) Enter the half-life of N20s in seconds. Use two significant figures and do not enter units b) Enter the total pressure in kPa 10 seconds after initiation of the reaction if initially there was 88.3kPa of pure N2O5 vapor. Use two significant figures and do not enter the units c) Enter the total pressure in kPa 10 minutes after initiation of the reaction...
Consider the following reaction: 2NiO(s)→2Ni(s)+O2(g) Vapor Pressure of Water versus Temperature Temperature (∘C) Pressure (mmHg) Temperature (∘C) Pressure (mmHg) 0 4.58 55 118.2 5 6.54 60 149.6 10 9.21 65 187.5 15 12.79 70 233.7 20 17.55 75 289.1 25 23.78 80 355.1 30 31.86 85 433.6 35 42.23 90 525.8 40 55.40 95 633.9 45 71.97 100 760.0 50 92.6 Part A If O2 is collected over water at 40.0 ∘C and a total pressure of 742 mmHg ,...
4. Consider a thin circular disk that has been heated up to 100 °C and then left inside a chamber to cool down. The chamber surface is kept at 50 °C and the air inside is maintained at 20 °C Assume that the disk is held at the center of the chamber and the heat conduction is neglectable What is the total rate of heat transfer from the disk? The disk diameter is 500 mm and the 0.5 surface emissivity...
The rate constant for the first-order decomposition of N2O5 is 2.81×10−2 s−1 at 20∘C. If the initial concentration of N2O5 is 2.50 M, what is the [N2O5] after 100 seconds?
1) The rate constant for the reaction 2 N,Os(9) = 4 NO (9) + O2(9) is reported in units of sl. What is the overall order of the reaction? 2) The rate law for a reaction was reported as rate=k[A] [B][C] with molar concentrations in moles per cubic decimetre and time in seconds. What are the units of k? 3) The rate constant for the pseudo first-order acid- catalysed hydrolysis of glucose is 4.07' 10-s. Calculate the half-life for the...
9. The kinetics of the oxidation of ferrodoxin by oxygen were investigated in a careful series of experiments, shown below at 25 °C. 2 Fd[Fe2+] (aq) + O2 (aq) + 2 H* (aq) 2 Fd[Fe3] H202 (aq) What was measured was the absorbance of the Fd[Fe2+] at 475 nm after exactly 1 second of reaction, in a 1-cm cuvette. The initial absorbance of the solution at 475 nm was o.095. Hint, from the decrease in A475 you can calculate how...
Ammonia (NH3) reacts with oxygen (O2) to form nitric oxide (NO) and water (H20). Consider the reaction of 100 moles/s of ammonia at 25°C with 50% excess air also at 25°C. The reaction reaches 75% conversion of the limiting reagent and the products leave at 200°C. The entire process is conducted isobarically at 1 atm. Determine the following: a) Write down the balanced chemical reaction per mole of the limiting reagent? (6 pts) b) What are the initial amounts of...