Assume that the cooking of an egg is a first order process. Assume further that it takes 3 minutes to half- cook (soft boil) an egg at 100°C. If the activation energy of the cooking of an egg is 75 kJ/mole, how long would it take to soft boil an egg at the top of Mt. Everest where water boils at 80°C?

Consider the following reaction: A (g) + 2B (g) → C (g) + D (g) Is this reaction likely to be an elementary reaction step? Why or why not? Consider what must happen molecularly for the reaction to occur.

Radioactive decay of unstable atomic nuclei is at first order process. The half-life for the radioactive decay of 14C is 5730 years. An archeological sample contained wood that had 87% of the 14C found in living trees. How old is the archaeological sample (in years)?

A first order reaction has a half life 445.44 seconds. What is the rate constant in reciprocal seconds?

Consider the coagulation of a protein at 100°C. The first-order reaction has an activation energy of 69 kJ/mol. If the protein takes 5.4 minutes to coagulate in boiling water at 100°C, then how long will it take to coagulate the protein at an altitude where water boils at 86°C?

The rate constant for the reaction below at 701K is 2.57 M-1s-1.NO2 (g) + CO (g) → NO (g) + CO (g)Calculate the rate constant at 895K given the activation energy to be 145 kJ/mol.

The rate constant for a first-order reaction is 2.66 × 10‒2 s‒1 at 298 K. What is the rate constant at 350. K if the activation energy for the reaction is 52.9 kJ/mol?

The rearrangement of ammonium cyanate to urea in aqueous solution at 50 °C NHẠNCO(aq)→(NH2)½CO(aq) is second order in NH,NCO. In one experiment, when the initial concentration of NH4NCO was 0.136 M, the concentration of NH,NCO dropped to 3.75×102 M after 1.12×103 minutes had passed. Based on these data, the rate constant for the reaction is M min!.

A student obtained the following data for the gas phase decomposition of phosphine at 120 °C. PH3(g) 1/4 P4(g) + 3/2 H₂(g) 9.40x10-2 [PH3], M time, s 0 4.70x10-2 29.9 2.35x10-2 1.18x10-2 89.7 59.8 (1) What is the half-life for the reaction starting at t = 0 s? What is the half-life for the reaction starting at t = 29.9 s? Does the half-life increase, decrease or remain constant as the reaction proceeds? (2) Is the reaction zero, first, or second order? (3) Based on these data, what is the rate constant for the reaction?