Determining concentration in ppm
A 500 gm tooth paste sample has 0.2g fluoride concentration. Determine the concentration of F in terms of ppm level: (a) 250 (b) 200 (c) 400 (d) 1000Answer: (c) F-ions in ppm = (0.2/500) x 106 = 400
the death cap mushroom based on your knowledge of the biochemistry of dna and rna
During processing of food, several chemicals are added to it to augment its shelf life and to make it more attractive as well. Main types of food addi
Which of the following would have the maximum osmotic pressure (assume that all salts are 90% dissociated): (a) Decimolar aluminium sulphate (b) Decimolar barium chloride (c) Decimolar sodium sulphate (d) A solution obtained by mix
Detail the moles of HCl which are present in .70 L of a .33 M HCl solution?
Give me answer of this question. A solution contains 1.2046 x 1024 hydrochloric acid molecules in one dm3 of the solution. The strength of the solution is: (a) 6 N (b) 2 N (c) 4 N (d) 8 N
Describe the difference between law of multiple proportions and law of definite proportions?
is entropy on moleculare basis relates to the tras.,vib.,and rotational motions?
Polymers are the chief products of modern chemical industry which form the backbone of present society. Daily life without the discovery and varied applications of polymers would not have been easier and colourful. The materials made of polymers find multifarious uses and applications in all walk
What are the various illustrations of the reversible reaction? Explain briefly?
what are the examples of biodegradable polymers
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