Answer:
1) Increases
2) decreases
3) increases
4) decreases
Explanation:
When the intermolecular forces in a liquid increases, the greater vapour pressure of the liquid decreases accordingly.
Since the vapour pressure is proportional to temperature, as temperature increases, the vapour pressure increases alongside.
As intermolecular forces increases, the boiling point increases accordingly since more energy is required to break intermolecular bonds.
Lastly, the greater the surface area, tell greater the vapour pressure since more liquid surface area is now available.
It is physical change because ? has changed alone not with chemicals
The periodic table is an ordered way of representing chemical elements. They were ordered according to their atomic number, remember that the atomic number corresponds to the number of protons of the elements.
So the answer will be option C) Atomic Number
Answer: the effective nuclear charge of sulfur is less than that of chlorine
Explanation:
Ionization Energy can be defined as the energy needed for the complete removal of valence electron.
Ionization Energy decreases steadily down the group because of the outer electrons becomes progressively separated from the nucleus, hence they are less tightly held.
Also, Ionization Energy increases from left to right across the period i.e formation of a cation becomes more difficult owing to increase in nuclear charge.
Therefore, the effective nuclear charge of sulfur is less than that of chlorine because Chlorine have a greater ionization energy.
In this problem you would need to determine the mass of each
element first. The mass of phosphorus is given which is 31 grams. The mass of
oxygen is the difference between 71 grams and 31 since we know that the compound
formed weighs 71 grams. Then determine the moles of each element. You would get
1.0009 moles for phosphorus and 2.5 moles for oxygen. You have to then multiply
the moles to the lowest number that would give a whole number for each element.
The empirical formula of the oxide is P2O5.
