Answer: False
Explanation: In the written form of an ionic compound, the positively charged cation always comes before the negatively charged anion. For instance, the written name for is calcium chloride because the compound has calcium () cations and chloride () anions.
Answer:
A
Explanation:
The group number of an element is equal to the number of electrons the outermost shell (or highest energy level) contains
We know that the relationship between enthalpy and entropy is:
ΔS = <span>ΔH/T
Therefore, both the change in enthalpy and the change in entropy will have the same sign. Now, considering each change:
Sublimation: Negative
Freezing: Positive
Condensation: Positive
Deposition: Positive
Boiling: Negative
Melting: Negative</span>
Answer:
H2 is the limiting reactant.
Explanation:
From the diagram above:
H2 => White ball
O2 => Red ball
Before the reaction
H2 => White ball => 10
O2 => Red ball => 7
After the reaction
H2O => White and red ball => 10
O2 => 2
From the simple illustration above, we can see that all the H2 were used up in the reaction but there are left over of O2.
This simply means that H2 is the limiting reactant as all of it is used up in the reaction while O2 is the excess reactant as there are leftover.
Answer:
O D. It has an -OH group attached to the end of the molecule.
Explanation:
Some alcohols have hydroxyl group (OH) attached to the end of a molecule and some have it attached as a branch on the molecule
- R is aryl or alkyl group
- OH is hydroxyl group
