A certain first order reaction has a rate constant K= 2.75 x 10^-2 s^-1 at 20 C

a. What is the half life for this reaction?

b. If the initial concentration is 1.50 M, what will be the concentration after 6.00 minutes?

c. What is the value of the rate constant at 60 C if the activation energy is 75.0 kJ/mol?

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg