Answer:
Explanation:
1. Boron nitride is prepared synthetically in lab.
2. When ammonia is treated with boric acid or boron trioxide boron nitride is prepared.This are the other reaction to produce boron nitride.
3. B
2
O
3
+2NH
3
→2BN+3H
2
O (T = 900 C)
4. B(OH)
3
+NH
3
→BN+3H
2
O (T = 900 C)
5. B
2
O
3
+CO(NH
2
)
2
→2BN+CO
2
+2H
2
O (T > 1000 C)
6. B
2
O
3
+3CaB
6
+10N
2
→20BN+3CaO (T > 1500 C)
Properties of Boron nitride :
1. Boron nitride is ionic in nature hence it reduces he co valency and electrical conductivity.
2. Hexa-boron nitride is thermally stable.1. Boron nitride is prepared synthetically in lab.
2. When ammonia is treated with boric acid or boron trioxide boron nitride is prepared.This are the other reaction to produce boron nitride.
3. B
2
O
3
+2NH
3
→2BN+3H
2
O (T = 900 C)
4. B(OH)
3
+NH
3
→BN+3H
2
O (T = 900 C)
5. B
2
O
3
+CO(NH
2
)
2
→2BN+CO
2
+2H
2
O (T > 1000 C)
6. B
2
O
3
+3CaB
6
+10N
2
→20BN+3CaO (T > 1500 C)
Properties of Boron nitride :
1. Boron nitride is ionic in nature hence it reduces he co valency and electrical conductivity.
2. Hexa-boron nitride is thermally stable.
Answer:
<u>○</u><u>MONOPOLY</u><u> </u><u>○</u>
○1▪︎Monopoly is the type of imperfect competition where a seller or producer captures the majority of market share due to lack of substitutes or competitors.○
○2▪︎Nil competition exists as only one seller present in the market.○
<u>○</u><u>MONOPOLISTIC</u><u> </u><u>○</u>
○1▪︎Monopolistic competition is a type of imperfect competition where many sellers try to capture market share by differentiating their products.○
○2▪︎Very high competition exists as there are many sellers.○
Answer:
1.98 M
Explanation:
Given data
- Initial volume (V₁): 93.2 mL
- Initial concentration (C₁): 2.03 M
- Volume of water added: 3.92 L
Step 1: Convert V₁ to liters
We will use the relationship 1 L = 1000 mL.
Step 2: Calculate the final volume (V₂)
The final volume is the sum of the initial volume and the volume of water.
Step 3: Calculate the final concentration (C₂)
We will use the dilution rule.
The answer to this question would be: <span>B. They have a higher mass
The mass of an atom is determined by their mass number which was the sum of their protons and neutrons. Protons of an element will be same. So any isotope of an element will have the same number of proton, no isotope should have more proton. The mass is increased because some isotope has more neutrons than others, resulting in a higher mass.</span>
Subtract the group number from the atomic number.