Atank contains a gas mixture of 0.852 atm of he, 685 mmhg of o2, and 455 mmhg of n2. what is the pressure in mmhg of the gas mixture?

Iknow the answer is a but i don't know why

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.