At the 2018 AP Chemistry reading in Salt Lake City, a total of 146508 exams were graded by 302 readers. The conference ran for a total of 6 days, in which 5 of those days were devoted for scoring. All of the readers worked from 8 AM to 5 PM every day and took breaks from grading from 10-10:15 AM
12:15-1:15 PM, and 3:00-3:15 PM. On average, how long did it take for 1 reader to score an exam? (Answer should be in minutes to 1 decimal place)

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.