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28 Sep 2019
6. At 150°C the decomposition of acetaldehyde CH3CHO to methane is a first order reaction. If the rate constant for the reaction at 150°C is 0.029 min-1 , how long does it take a concentration of 0.050 mol L-1 of acetaldehyde to reduce to a concentration of 0.040 mol L-1 ?
7. The decomposition of hydrogen iodide into hydrogen and iodine is a second order reaction. The rate constant k = 0.080 L mol-1 s-1 . How long does it take an initial concentration of 0.050 M to decrease to half this concentration?
8. The gold-198 isotope has a half-life of 2.7 days. If you start with 10 mg at the beginning of the week, how much remains at the end of the week, seven days later?
PLEASE SHOW FULL WORK. Thanks
6. At 150°C the decomposition of acetaldehyde CH3CHO to methane is a first order reaction. If the rate constant for the reaction at 150°C is 0.029 min-1 , how long does it take a concentration of 0.050 mol L-1 of acetaldehyde to reduce to a concentration of 0.040 mol L-1 ?
7. The decomposition of hydrogen iodide into hydrogen and iodine is a second order reaction. The rate constant k = 0.080 L mol-1 s-1 . How long does it take an initial concentration of 0.050 M to decrease to half this concentration?
8. The gold-198 isotope has a half-life of 2.7 days. If you start with 10 mg at the beginning of the week, how much remains at the end of the week, seven days later?
PLEASE SHOW FULL WORK. Thanks
Deanna HettingerLv2
29 Sep 2019
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