ChemistA Magnesium reacts with hydrochloric acid according to this equation
Mg + 2HCI - MgCl2 + H2
both Mg and HCl
A scientist combines 2.5 mol of Mg
and 4.0 mol of HCl in a flask. What is
the limiting reagent?
Mg
neither Mg nor HCI
HCI

The limiting reagent : HCl

Given

Mg + 2HCI - MgCl₂ + H₂

2.5 mol of Mg  and 4.0 mol of HCl

Required

the limiting reagent

Solution

A method that can be used to find limiting reactants is to divide the number of moles of known substances by their respective coefficients

mol ratio Mg : HCl =

HCl as a limiting reagent(smaller ratio)

idk what the question is about

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8