Which of these types of heat transfer would be conduction? Select all that apply. 1. Touching a stove and being burned 2.Heat from the sun warming your face
3. Ice cooling down your hand
4. frozen material thawing when kept in water
5.Boiling water by thrusting a red-hot piece of iron into it​

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.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Classify this reaction: 2al+n2-> aln.