A weather balloon is filled to the volume of 150.0l on a day when the temperature is 10.0c. if no gas escaped, what would be the volume of the weather balloon after it rises to an altitude where the temperature is -8.00c?

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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

the answer would be a

c) should be the answer.