Number 2 is the mass of an electron
Answer:
No state of matter is required
Explanation:
When <em>radiant energy </em>is the source, we are talking about <em>energy transfer by radiation, </em>so matter is not needed for the energy to be transfered.
An example of this could be the Sun, it heats up the Earth by radiation, even through the vacuum of outer space, where there is next to no matter.
Answer :
Explanation : In the molecule of the hydrogen bonding forces tend to resist any phase transition form liquid state to gaseous phase, and these hydrogen bonding forces are greater usually when the hydrogen is bound to an electronegative atom like chlorine, fluorine,oxygen,etc. This then lowers the viscosity of the compound.