The combustion of ethane (C2H6) produces carbon dioxide and steam. 2C, H, (g) + 702(g) — 4CO2(g) + 6H2O(g)
How many moles of Co, are produced when 5.55 mol of ethane is burned in an excess of oxygen?
moles of CO2:

Number of moles of CO₂ produced = 11.1 mol

Explanation:

Given data:

Mass of ethane = 5.55 mol

Number of moles of CO₂ produced = ?

Solution:

Chemical equation:

2C₂H₆ + 7O₂       →     4CO₂ + 6H₂O

Now we will compare the moles of ethane and carbondioxide.

             C₂H₆          :           CO₂

                 2             :            4

              5.55          :         4/2×5.55 = 11.1 moles

Number of moles of CO₂ produced =  11.1 mol

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

can you attach the