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अर्कज ..
Subject: Chemistry
, asked on 14/5/18
Solve this:
Q. The synthesis of ammonia is done by Haber's process. The reaction involved during the synthesis of ammonia (NH
3
) is
N
2
(g)
+3H
2(g)
→
2NH
3(g)
How many litres of NH
3
will be produced at STP from 20 moles of N
2
?
(A) 696 L
(B) 796 L
(C) 896 L
(D) 996 L
Answer
2
अर्कज ..
Subject: Chemistry
, asked on 14/5/18
Ques.
2.5 moles of sulphuryl chloride was dissolved in water to produce sulphuric acid and hydrochloric acid. The number of moles of KOH required to completely neutralize the solution is
(A) 5 (2) 7 (3) 8 (4) 10
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 14/5/18
Ques. What will be the volume of 34 g ammonia at STP?
(A) 44.8 Litres
(B) 22.4 Litres
(C) 20.0 Litres
(D) 49.0 Litres
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 14/5/18
Ques.
What should be the percentage of iron and dioxygen in a Fe
2
O
3
molecule ?
(A) Fe- 69.9% and O
2
- 30.1%
(B) Fe- 50% and O
2
- 50%
(C) Fe- 57.7% and O
2
- 42.3%
(D) Fe- 34% and O
2
- 66%
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 14/5/18
Solve this:
Answer
2
Harini
Subject: Chemistry
, asked on 14/5/18
isotopic number can be negative right like protium ???
Answer
2
अर्कज
Subject: Chemistry
, asked on 13/5/18
Solve this:
Answer
1
अर्कज
Subject: Chemistry
, asked on 13/5/18
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×
10
23
Answer
1
अर्कज
Subject: Chemistry
, asked on 13/5/18
Solve this:
Q.7. If 60
c
m
3
of bromine gas is leaking every minute from a closed container (at STP), then the number of molecules of the gas that escape in one hour is
A. 1.613
×
10
20
B. 0.967
×
10
22
C. 1.613
×
10
22
D. 9.679
×
10
22
Answer
2
अर्कज ..
Subject: Chemistry
, asked on 13/5/18
What is the mole fraction of the solute in 2.5 m aqueous solution?
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 13/5/18
Example 119. What is the molality of a solution of methanol in water in which the mole fraction of methanol is 0.25.
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 13/5/18
Converting one concentration unit into another concentration unit . Calculate molality from molarity Molality is the moles of solute dissolved per 1000 g of the solvent wheareas molarity is the moles of solute per 1000 mL of the solution Molality can be calculated from molarity of this solution as : (a) Calculate the total mass of 1 L (1000 mL ) of solution by using density of the solution (b) Calculate mass of solute from the molarity ( no. of moles ) In 1 L of the solution (c) Calculate the mass of the solvent by subtracting mass of solute from the total mass of solution (d) From the values of moles of solute and mass of solvent calculate molality
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 13/5/18
Solve this:
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 13/5/18
Explain
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 13/5/18
Solve this:
Answer
2
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What are you looking for?
Q. The synthesis of ammonia is done by Haber's process. The reaction involved during the synthesis of ammonia (NH3) is
N2(g)+3H2(g) 2NH3(g)
How many litres of NH3 will be produced at STP from 20 moles of N2?
(A) 696 L
(B) 796 L
(C) 896 L
(D) 996 L
(A) 5 (2) 7 (3) 8 (4) 10
(A) 44.8 Litres
(B) 22.4 Litres
(C) 20.0 Litres
(D) 49.0 Litres
(A) Fe- 69.9% and O2 - 30.1%
(B) Fe- 50% and O2 - 50%
(C) Fe- 57.7% and O2 - 42.3%
(D) Fe- 34% and O2 - 66%
Q.7. If 60 of bromine gas is leaking every minute from a closed container (at STP), then the number of molecules of the gas that escape in one hour is
A. 1.613
B. 0.967
C. 1.613
D. 9.679