Q-1 How many significant figures in 0.020590?
6
7
4
5
Q-2 The number of gram equivalent present in one litre of the solution is termed as
Mole percentage
Normality
Molarity
Mole fraction
Q-3 How many atom are present in 13 amu?
13
10
3
4
Q4-18 g of water contain
1 g atom of hydrogen
2 g atoms of hydrogen
3 g atoms of hydrogen
None of the above
Q5 Define the terms accuracy & precision.
Your answer
Q 6-what are molality and Molarity ?
Your answer
Q 7-The density of iron is 7.855 g/cc. Express it in SI units.
Q 8 calculate the mole fraction of ethyl alcohol and water in a solution in which 46 g ethyl alcohol and 180 g of water mixed together.
Q 8-Calculate the molality of 1 litre solution of 90 % sulphuric acid (wt/volume). The density of solution is 1.8 g/ml.
Q9- calculate the number of atoms of each kind(Al, S & O) in 0.25 Mol of aluminium sulphate.
Q10-An organic compound on analysis was found to have following Composition: Mg=9.76%, S=13.01%, O=26.01%, H2O(water) =51.22%. Calculate the empirical formula of the compound.
Answers
Answered by
1
Answer:
can't understand sorry for it
Answered by
2
Hi the first questions ans is 6 hope the answer is correct
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