Both are types of potential energy, and Involve stored energy.
Answer: 1,88×10²³ atoms of Br in 25g of Br
Explanation:
25g Br
1 mol of Br =79,9g Br
Number of Avogadro: 6,022×10²³ = 1 mol
25gBr× 1molBr/79,9gBr =
6,022×10²³ atoms of Br/1 mol Br =
1,88×10²³ atoms of Bromine
B. The solute dissolves.
C. The solute remains intact.
D. The solute reacts to form a precipitate.
Answer: Option (B) is the correct answer.
Explanation:
An ionic solid is a substance which has ionic bonds, that is, formed by the transfer of electrons.
Ionic bonds have strong force of attraction because ionic solids have opposite charges which strongly attract each other.
When we dissolve ionic solid in a beaker of water, it completely dissociate into its ions because polar molecules or solutes dissolve in polar solvents.
For example, when NaCl is dissociated into ions then the reaction is as follows.
Thus, we can conclude that when an ionic solid is placed in a beaker of water then the solute dissolves in it.
b. CO2
c. H2
d. H2O
Answer:
In the image below
Explanation:
Hope this helps you :)
The answer is C) energy is absorbed by the molecules.
1. Nucleus
2. Neutrons
3. Electrons
4. Protons