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Tanmay Yadav
Subject: Science
, asked 3 days, 6 hours ago
how to explain and verify that sulfate ions has to negative charges
Answer
1
Tanmay Yadav
Subject: Science
, asked 3 days, 6 hours ago
How to check ion is positive or negative
Answer
2
Tanmay Yadav
Subject: Science
, asked 3 days, 10 hours ago
How do we know that any ions is either positive or negative ?
Answer
1
Pavani Raju V S
Subject: Science
, asked 4 days, 7 hours ago
50 g of sample of calcium when reacted with excess of dil HCL 4.48L of H
_{2}
gas was liberated at STP Ca + 2HCL = CaCl
_{2 }
+ H
_{2}
. Find the percentage purity of the sample.
a) 22%
b) 16%
c) 50%
d) 40%
Answer
1
Anupam Jaiswal
Subject: Science
, asked 5 days, 6 hours ago
Plzz plzz answer fast.... .... .... ....... ...
Answer
3
Mukhtar Ali
Subject: Science
, asked 5 days, 13 hours ago
What is isomerism?
Answer
2
Pavani Raju V S
Subject: Science
, asked 1 week, 1 day ago
Ba(NO
_{3}
)
_{2}
+ Na
_{2}
SO
_{4}
= BaSO
_{4}
+ 2NaNO
_{3 }
Barium nitride is 75g and sodium sulphate is excess which produces 64.4g. what is the percentatge yield
Answer
1
Anupam Jaiswal
Subject: Science
, asked 1 week, 1 day ago
Please answer fast.. . . . .
Answer
2
Pavani Raju V S
Subject: Science
, asked 1 week, 3 days ago
How much coulomb charge is present on 1g ion of N
^{-3}
(a) 5.2 x10
^{6}
Couloumb
(b) 2.894 x 10
^{5}
Couloumb
(c) 6.6 x10
^{6}
Couloumb
(d) 8.2 x10
^{6}
Couloumb
Answer
2
Pavani Raju V S
Subject: Science
, asked 1 week, 3 days ago
IF N
_{A}
is Avagardo's number then the number of valence electrons in 4.2g of nitride ions (N
^{-3}
)
a) 2.4 N
_{A}
b) 4.2 N
_{A}
c) 1.6 N
_{A}
d) 3.2 N
_{A}
Answer
2
Pavani Raju V S
Subject: Science
, asked 1 week, 3 days ago
one litre of gas at stp weight 1.16g it can be possible be
a) C
_{2}
H
_{2}
b) CO
c) O
_{2}
d) CH
_{4}
Answer
2
Pavani Raju V S
Subject: Science
, asked 1 week, 3 days ago
The number of atoms in 4.25g of NH
_{3}
is approximately
a) 1 x 10
^{23}
b) 2 x 10
^{23}
c) 4 x 10
^{23}
d) 6 x 10
^{23}
Answer
1
Pavani Raju V S
Subject: Science
, asked 1 week, 3 days ago
7.5g of a gas occupy 5.8L of volume at STP the gas is
a)NO
b)N
_{2}
O
c)CO
d)CO
_{2}
Answer
2
Pavani Raju V S
Subject: Science
, asked 2 weeks ago
the total number of atoms in 0.5 moles of CaCO
_{3}
is ( N
_{A}
= Avagadro constant)
Answer
1
Aadhya Agarwal
Subject: Science
, asked 2 weeks, 2 days ago
How many molecules of water are there in 54 g of water?
Answer
3
1
2
3
4
5
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What are you looking for?

_{2}gas was liberated at STP Ca + 2HCL = CaCl_{2 }+ H_{2}. Find the percentage purity of the sample.a) 22%

b) 16%

c) 50%

d) 40%

_{3})_{2}+ Na_{2}SO_{4}= BaSO_{4}+ 2NaNO_{3 }Barium nitride is 75g and sodium sulphate is excess which produces 64.4g. what is the percentatge yield^{-3}(a) 5.2 x10

^{6}Couloumb(b) 2.894 x 10

^{5}Couloumb(c) 6.6 x10

^{6}Couloumb(d) 8.2 x10

^{6}Couloumb_{A}is Avagardo's number then the number of valence electrons in 4.2g of nitride ions (N^{-3})a) 2.4 N

_{A}b) 4.2 N

_{A}c) 1.6 N

_{A}d) 3.2 N

_{A}a) C

_{2}H_{2}b) CO

c) O

_{2}d) CH

_{4}_{3}is approximatelya) 1 x 10

^{23}b) 2 x 10

^{23}c) 4 x 10

^{23}d) 6 x 10

^{23}a)NO

b)N

_{2}Oc)CO

d)CO

_{2}_{3}is ( N_{A}= Avagadro constant)