Which one of the following is a double-displacement reaction?
a.) 2li (s) + znso4 (aq) → li2so4 (aq) + zn (s)
b.) hno3 (aq) + koh (aq) → h2o (l) + kno3 (aq)
c.) fe (s) + cuso4 (aq) → feso4 (aq) + cu (s)
d.) 2cu (s) + o2 (g) → 2cuo (s)

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

statement #3 on andre"s list is false.