When the following equation is balanced, what is the coefficient for hbr?
zn(s) + hbr(aq) -> znbr2(aq) + h2(g)
a) 3
b) 1
c) 6
d) 2

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Identify a strong intermolecular force of attraction between an alcohol