A semi truck traveling at 24.6 m/s (55 mph) pulls off the highway onto a local street where the speed limit is 15.6 m/s. The driver makes the change in speed over a 3.3 s interval. Calculate the deceleration of the truck.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

the maximum mass of nh3 is nh3 in grams

i think it's letter a.