Why did the Boeing 767 crew need to do a density calculation? What was wrong with theircalculation?

Their calculation was way too off to the actual one.

Explanation:

They need a density calculation so they can get the right vaule. Their calculation was way off compare to the acutal vuale.

Explanation:

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