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Ranak Sharma
Subject: Chemistry
, asked on 6/5/18
. (i)Determine the molecular formula of a compound which contains 29.1% Na , 40.5% S and 30.4% O and
has a molecular mass of 158u. (At. mass: Na=23u, S=32u, O=16u).
(ii)Concentration of glucose (C6H12O6) in normal blood is 90mg per 100 ml. What is the molarity of the
glucose solution in blood?
Answer
4
Ranak Sharma
Subject: Chemistry
, asked on 6/5/18
Calculate the mole fraction of each component in a solution having 25% water, 25% CH3COOH and 50% C2H5OH
Answer
2
Ranak Sharma
Subject: Chemistry
, asked on 6/5/18
10g of H2 (g) and 50g of O2 (g) are mixed to produce H2O(g). Calculate the amount of H2O
and the amount of unreacted reagent.
Answer
1
Bushra Siddiqui
Subject: Chemistry
, asked on 6/5/18
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Answer
1
Yatharth Patel
Subject: Chemistry
, asked on 5/5/18
Plz solve q2
Q.2. What is the weight of oxygen required for the complete combustion of 2.8 kg of ethylene (
C
2
H
4
)
(A) 2.8 kg
(B) 6.4 kg
(C) 6.72 kg
(D) 9.6 kg
Answer
1
Parag
Subject: Chemistry
, asked on 5/5/18
A gaseous compound gave the following results on analysis.
N=9.48%. S=20.9%. F=38.0%.
Determine the simplest formula of this compound.[step by step ]
Answer
1
Dev Puri
Subject: Chemistry
, asked on 5/5/18
25 ml of 2N hcl 50 ml of 4 N hno3 and x ml of 2M h2so4 are mixed together and the total volume is made upto 1L after dilution. 50 mL of this acid reacts with 25 ml of 1N Na2co3. Find x
Answer
1
Murali Krishna
Subject: Chemistry
, asked on 5/5/18
The spoilage of food can be prevented by addition of which vitamins as preservatives ?
Answer
1
Trishu
Subject: Chemistry
, asked on 5/5/18
A metal forms two oxides, one contains 46.67% of metal and another has 63.94% of metal. Show that this follows law of multiple proportions. (no link plz..)
Answer
1
Prakhar
Subject: Chemistry
, asked on 4/5/18
Carbon dioxide contains 27.27% carbon, carbon disulphide contains 15.79% carbon and sulfur monxide contains 67% sulfur. show that this is in reciprocal proportions
Answer
1
Dipesh Kumar Karesia
Subject: Chemistry
, asked on 3/5/18
please solve this completely explaining each step'::
Problem 1.5
50.0 kg of N
2
(g) and 10.0 kg of H
2
(g) are mixed to produce NH
3
(g). Calculate the NH
3
(g) formed. Identify the limiting reagent in the production of NH
3
in this situation.
Answer
1
Prabhuti
Subject: Chemistry
, asked on 3/5/18
Q. 2.746 g of a compound gave on analysing 1.94 g of silver 0.268 g of sulphur and 0.538 g of oxygen. Calculate the empirical formula of the compound.
Answer
1
Prabhuti
Subject: Chemistry
, asked on 3/5/18
Pls answer all these questions from Q5 pls its needed.
Q) In three moles of ethane
C
2
H
6
. Calculate (i) number of moles of carbon atoms (ii) number of moles of Hydrogen atoms (iii) number of molecules of ethane.
Q) Round up upto three significant figures:
(i) 34.216 (ii) 10.4107 (iii) 0.04597 (iv) 2.808
Answer
1
Eshita Rastogi
Subject: Chemistry
, asked on 2/5/18
Solve 3
Q.3. Calculate the mass of 60 %
H
2
S
O
4
required to decompose 50 g of chalk (calcium carbonate).
Answer
1
Jahnvi Singh
Subject: Chemistry
, asked on 2/5/18
Calculate mass percent of O2 in 20 ppm O2 in sea water.
Answer
1
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What are you looking for?
has a molecular mass of 158u. (At. mass: Na=23u, S=32u, O=16u).
(ii)Concentration of glucose (C6H12O6) in normal blood is 90mg per 100 ml. What is the molarity of the
glucose solution in blood?
and the amount of unreacted reagent.
Q.2. What is the weight of oxygen required for the complete combustion of 2.8 kg of ethylene ()
(A) 2.8 kg
(B) 6.4 kg
(C) 6.72 kg
(D) 9.6 kg
N=9.48%. S=20.9%. F=38.0%.
Determine the simplest formula of this compound.[step by step ]
Problem 1.5
50.0 kg of N2 (g) and 10.0 kg of H2 (g) are mixed to produce NH3 (g). Calculate the NH3 (g) formed. Identify the limiting reagent in the production of NH3 in this situation.
Q. 2.746 g of a compound gave on analysing 1.94 g of silver 0.268 g of sulphur and 0.538 g of oxygen. Calculate the empirical formula of the compound.
Q) In three moles of ethane . Calculate (i) number of moles of carbon atoms (ii) number of moles of Hydrogen atoms (iii) number of molecules of ethane.
Q) Round up upto three significant figures:
(i) 34.216 (ii) 10.4107 (iii) 0.04597 (iv) 2.808
Q.3. Calculate the mass of 60 % required to decompose 50 g of chalk (calcium carbonate).