Yes, water can stay liquid below zero degrees Celsius. ... When we apply pressure to a liquid, we force the molecules to get closer together. They can therefore form stable bonds and become a solid even if they have a higher temperature than the freezing point at standard pressure.
Answer:Iodine:
Electron configuration:
[Kr]4d10 5s2 5p5
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5
Explanation:
Iodine is an element in group 17. It has only on umpired electron in the 5p orbital it combines with fluorine which also has one unpaired electron in its outermost orbital to form different complex interhalogen compounds by covalent bonding. These interhalogen compounds exhibit various shapes and properties.
Answer:
I believe your answer is B) make a prediction
Explanation:
Answer:
a) pH will be 12.398
b) pH will be 4.82.
Explanation:
a) The moles of NaOH added = molarity X volume (L) = 2 X 0.01 = 0.02 moles
The total volume after addition of pure water = 0.780+0.01 = 0.79 L
The new concentration of /NaOH will be:
the [OH⁻] = 0.025
pOH = -log [OH⁻] = 1.602
pH = 14 -pOH = 12.398
b) The buffer has butanoic acid and butanoate ion.
i) Before addition of NaOH the pH will be calculated using Henderson Hassalbalch's equation:
pKa=
ii) on addition of base the pH will increase.
Answer:
The correct option is: d. higher ... lower
Explanation:
Osmosis is a spontaneous process that involves the movement of the solvent particles from the region having <u>low solute concentration to the region having high solute concentration</u>, through a semipermeable membrane. It is a spontaneous process.
Osmosis can also be described as the movement of solvent particles from the region with <u>high solvent concentration to low solvent concentration.</u>