Try to grow a plant with and without soil
1) Only if new observations led to a change in our current knowledge.
2) <span>place their own moral views about the needs of society
3) FALSE
4) FALSE
5) FALSE(i think)
6) TRUE
7) Distillation
8) the # of neutrons
9) the element becomes a different element
10) atomic radii increase
11) decreases
i hope these are right and helps. please give me brainliest</span>
Answer:
liquid will be evaporated while solid remains
Answer:
The boiling point of HF is <u><em>higher than</em></u> the boiling point of H2, and it is <u><em>higher than</em></u> the boiling point of F2.
Explanation:
In HF, inter- molecule forces will be present between the hydrogen and fluorine atoms. There will be hydrogen bonding present among the hydrogen and fluorine atoms. Hydrogen bonds are strong bonds and hence the boiling point for HF would be high as much energy will be required to break these bonds.
H2 and F2 will only have intra-molecular attractions and there will be no hydrogen bonds present in them. As a result, their boiling point will be lower.
