HURRY PLEASE (MULTI CHOICE) What are the purposes of magnets in a maglev system? Choose all correct answers.

Lift the train
Lift the train

Move the train
Move the train

Stabilize the train
Stabilize the train

Increase friction

maglev

Explanation:

In a train system two magnets are present:one set to repel and push the train up off the track,and another set the elevated train ahead,taking advantage of the lack 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