Determine the amount of substance and the mass of zinc and hydrochloric acid required to obtain hydrogen with the amount of substance of 0.5 mol: Zn + 2HCl = ZnCl₂ + H₂

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

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

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.