How would someone know if a meteor has made contact with Earth? A
A species of animals becomes extinct.
B
A piece of space rock is discovered.
The meteor burns up and becomes a shooting star
D
A big bang would be heard as the meteor burns out.

Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)

Can someone me with 1 to 4 plz. fast

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.