Identify each unit as belonging to si units or us customary units

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?