A Helium filled balloon has a volume of 5.0 L at 20°C. The volume of the balloon decreases to 4.0 L after it is placed outside on a cold day. What is the new Temperature of the gas in the balloon?​

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Answer) by studying proton collisions hope this : )

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.