saturated solution
supersaturated solution
A.
The amount of solute dissolved is less that the maximum amount the solution can hold.
B.
The amount of solute dissolved is the maximum amount the solution can hold.
C.
The amount of solute dissolved is more than the usual maximum amount.
The following definition to the type of solution it describes are
unsaturated solution: A. The amount of solute dissolved is less that the maximum amount the solution can hold.
saturated solution: B. The amount of solute dissolved is the maximum amount the solution can hold.
supersaturated solution: C. The amount of solute dissolved is more than the usual maximum amount.
b. niobium bromite
c. sodium bromide
d. niobium bromide
Answer:
C. Sodium Bromide
An 'amine' is an organic compound primarily composed of carbon(C), hydrogen(H) and nitrogen (N).
Ammonia is a molecule in which the N atom is attached to 3 H atoms, in addition there is a lone pair of electrons on the central N atom. Amines are essentially derivatives of ammonia where one of more H atoms have been replaced by an alkyl (R) or aryl(Ar) group
For example:
R-NH2 == primary amine
R2-NH == secondary amine
R3N == tertiary amine
c. stratosphere
b. mesosphere
d. exosphere
Answer: Option (c) is the correct answer.
Explanation:
A layer above the troposphere and below the mesosphere is known as stratosphere.
This layer of stratosphere contains about 90% concentration of ozone and there is no occurrence of weather in this layer.
The occurrence of ozone in stratosphere makes it warmer.
Therefore, we can conclude that the stratosphere contains the highest concentration of ozone.
B. In a chemical change, a substance changes its phase
C. In a chemical change, the molecular structure of a substance changes
D. In a chemical change, one substance dissolves into another
Answer : The correct option is C.
Explanation :
Chemical change : It is defined as a change in which a new compounds are formed by the chemical reaction. Changes occurs in their chemical composition and properties.
The molecular structure of a substance changes in a chemical reaction is a chemical change.
The example of chemical change in terms of change in molecular structure is the reaction of hydrogen with oxygen.
The reaction of hydrogen with oxygen is,
In this reaction, the H-H bond is break and O-H bond is form.