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What is the nature of urea? Is it acidic basic or neautral how can wr verify it?
1. For what fraction of annual CO 2 emissions from fossil fuel burning are automobiles responsible? 2. A 1000-kg car travels 1.6 × 10 4 km/yr. What is the ratio of the mass of
need an idea for chemistry project
why is filtration in soil and water a slow process and explain the colour change in the filtrate
what are the electron deficient molecule explain with examples
The number of electrons in [ 40 19 k ] -1 is: (1) 19 (2) 20 (3)18 (4)40 Ans: 40
50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a buffer . what is the PH is if Pk b is 4.8? Solution) The given buffer is a base buffer [NH4OH] =[(50*0.1)/75] [NH4Cl] =[(
Which of the following sets of quantum numbers is not allowed : (1) n=1, l=0,m=0 s= +1/2 (2) n=1, l=1,m=0 s= -1/2 (3) n=2, l=1,m=1 s= +1/2
Classify phylum protozoa upto classes giving characters and suitable examples.
characteristics of irreversible reaction
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