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
Provide solution of this question. Which has maximum vapour pressure: (a) HI (b) HBr (c) HCl (d) HF
The relative lowering of vapour pressure of 0.2 molal solution in which solvent is benzene
Avogadro's hypothesis Law Principle- Berzelius, a chemist tried
Choose the right answer from following. The number of moles of KCL in 1000ml of 3 molar solution is: (a)1 (b)2 (c)3 (d)1.5
Illustrate the Lewis Dot Structure for the CH4O.
Describe the various cons of eating the organic foods? Briefly illustrate it.
how 0.5N HCL is prepared for 10 littre solution
what is the basicity of primary secondary and tertiary amines in chlorobenzene
Average covalent radii can be assigned on the basis of molecular structures. The accumulation of structural data by spectroscopic studies and both electron and x-ray diffraction studies allows one to investigate the possibili
The boiling point of 0.1 molal aqueous solution of urea is 100.18oC at 1 atm. The molal elevation constant of water is: (a) 1.8 (b) 0.18 (c) 18 (d) 18.6Answer: (a) Kb
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