A first order reaction initially contains 1. 00 × 10²⁰ molecules. If the reaction has a half-life of 20. 0 minutes, how many molecules remain unreacted after 80. 0 minutes?.

When you apply for a college what is the main thing that will get you accepted?

Which object has the least amount of kinetic energy? a. a car driving down a road b. a soccer ball rolling down a hill c. a bicycle locked to a bike rack d. a satellite orbiting earth

Which of the following is not a component of your high school transcripts? a. courses you have enrolled in for the current year b. courses you have completed c. your cumulative gpa d. varsity sports you have played