What will happen to a test dummy during a crash test if its seatbelt is not buckled? the test dummy will stop when the car stops. the test dummy will continue forward until it makes contact with another object. the test dummy will strike and rebound continuously within the interior of the car the test dummy will remain motionless.

The correct answer is that the test dummy will continue forward until it makes contact with another object.  

The Newton's first law of motion is also called the law of inertia, wherein an object at rest will remain at rest, while an object in motion will stay in motion with the similar speed and direction unless it is acted upon by an unbalanced force. The seatbelts and airbags in a car offer this force of stopping for the crash test dummy. In case, if the seatbelt of the dummy is not buckled then it will continue to move in forwarding direction, unless and until it meets an object.  

its weight is greatest on earth

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