The answer would be km in 5 seconds
Answer:
sodium has a lower electronegativity:)
Explanation:
The heated air temperature from inside the balloon more likely rises since it can't escape its trapped resulting in different density from the cooler air, the cooler air from the outside is a bit denser than the heated.
I believe the first space is 1. alloys, and the second space is also 1. main. I don't know for sure but I hope this helps.
When atoms and molecules speed up or slow down, that is a physical change. When they change state from liquid to solid or from gas to liquid, that is a physical change. ... The ions or molecules can still come back together to form the original substance
