You are planning on making punch and you would like to cool it with ice. At the store, there are 2 different one-pound bags of ice to choose from:

one that contains large ice cubes

one that contains small ice chips.

You only want to purchase one bag of ice and will add the entire bag to the punch.

Would one of the bags cool the punch at a faster rate? If so, which one and
why? If not, why?

Would one of the bags of ice cool the punch to a lower temperature? If so,
which one and why? If not, why?

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

the correct answer would be d. hope this !