1. How many liters of Co, gas are produced from 3.5 moles of 02​

The Equation of reaction

C + O2 === CO2

First Blank spot would be

3.5moles of O2

2nd spot

Up 1mole of CO2

Down 2moles of Oxygen atoms

3rd spot

Up... --- 22.4L of CO2(1mole of any gas at STP contains 22.4L)

Down 1mole of CO2

Final answer --- 3.5 x 1/2 x 22.4

=39.2L of CO2

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