How many liters of a 0.400 M HBr dilute solution can be made from a stock solution of 5.00 L of 8.00 M HBr solution? Edit
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away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

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

1.solid

2.carbon dioxide

3.helium

i think that the answer is c