You need 2.7 moles of Selenium (Se) for a reaction at STP. What volume of selenium must you measure? Question 12 options:

8.30 L

0.12 L

33.6 L

60.48 L

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)