Higher temperature, more kinetic energy, more space between particles, higher volume
(:
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.
The molarity of a 27%(v/v) aqueous ethanol solution is 4.63 M
calculation
convert 27%(v/v) to fraction = 27ml/100 ml
use density to convert 27ml to grams = 27 ml x0.79 g/ml = 21.33 g
find the number of moles of C2H6O
moles = mass/molar mass of C2H6O(46.07 g/mol)
moles is therefore = 21.33 g /46.07 g/mol =0.463 moles
find the molarity = moles /volume in liters
volume in liter = 100 ml/1000 = 0.1 L
molarity is therefore = 0.463 mole/0.1 L = 4.63 M
Silver. It is number 47 on the periodic table meaning it has 47 protons. It’s atomic mass is 108. 47+61=108 so it is definitely silver