Which of the following scenarios best describes Newton’s law of action-reaction? A A bottle of soda sitting in the console of a vehicle appears to move left as the vehicle makes a sharp right turn. B A rocket moves upward as the engine pushes downward against exhaust gases and the exhaust gases push upward against the engine. C A train traveling 88 kilometers per hour takes approximately one mile to come to a complete stop. D An ice skater sharpens the blades of their skates to lessen the effect of friction.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g