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)

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?