What volume of hydrogen gas is produced when 70.1 g of iron reacts completely according to the following reaction at 25 °C and 1 atm? iron (s) + hydrochloric acid(aq)iron(II) chloride (aq) + hydrogen(g) liters hydrogen gas

Explanation:

We will need a balanced chemical equation with molar masses, so, let's gather all the information in one place.

Mᵣ:           55.84

                2Fe + 6HCl ⟶ 2FeCl₃ + 3H₂

m/g:          70.1

(a) Moles of Fe

(b) Moles of H₂

The molar ratio is 3 mol H₂:2 mol Fe

(c) Volume of H₂

We can use the Ideal Gas Law to calculate the volume of hydrogen.

pV = nRT

its mg hope this

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72