What is the volume of 2.1 moles of chlorine gas (cl2) at standard temperature and pressure (stp)?
a. 10.7 l
b. 22.4 l
c. 47.0 l
d. 82.0 l

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Which characteristics can be used to differentiate star systems? check all that apply.