Maggie measures the volumes and masses of various substances and records her observations in the table. Volume (cm3) Mass (g)
Liquid A 10.0 16.0
Liquid B 10.0 13.0
Cube A 22.0 20.0
Cube B 9.0 14.0
What can Maggie correctly predict about the relationship between the liquids and the solids?

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 electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

un recipient conține 6,4 moli de gaz. gazul hidrogen reprezintă 25% din totalul kilometrilor din container. în cazul în care presiunea totală este de 1.24 atm ceea ce este