Answer:
Explanation:
1. Write the skeleton equation for the half-reaction
NO₃⁻ ⟶ N₂O
2. Balance all atoms other than H and O
2NO₃⁻ ⟶ N₂O
3. Balance O by adding H₂O molecules to the deficient side.
2NO₃⁻ ⟶ N₂O + 5H₂O
4. Balance H by adding H⁺ ions to the deficient side.
2NO₃⁻ + 10H⁺ ⟶ N₂O + 5H₂O
5. Balance charge by adding electrons to the deficient side.
2NO₃⁻ + 10H⁺ + 8e⁻ ⟶ N₂O + 5H₂O
The amount of charge required to reduce 2 mol of NO₃⁻ is 8 F
Answer the correct option will be option B.
Explanation: this is how he showed the electron could orbit the nucleus without falling into it. This is so because he explained that the electron revolves around the nucleus in a fixed circular orbit with fixed energy and cannot occupy just any energy level which is defined as quantisation of energy.
option A is one of postulates given by Dalton in his Dalton's atomic theory which later proved to be wrong.
option C it is one of the postulates given by the in J.J Thomson in his model of an atom which was the first atomic model.
option D Schrodinger has used the wave nature to explain the position of electrons around the nucleus.
Answer:
1326.6 × 10⁻²³g
Explanation:
Given data:
Number of atoms of iron = 143 atoms
Average atomic mass of iron = 55.845 amu
Mass of iron = ?
Solution:
It is known that,
55.845 g of iron = one mole of iron = 6.02× 10²³ atoms
For 143 atoms:
143 atoms /6.02× 10²³ atoms × 55.845 g
23.754 × 10⁻²³× 55.845 g
1326.6 × 10⁻²³g
Liquid State
A liquid has a definite volume that can be measured but takes the shape of its container.
Explanation:
hope the picture above helps you to understand:)
