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
what is the meaning of fourth power of valency of an active ion?
What are the various illustrations of the reversible reaction? Explain briefly?
IN GAS PHASE, BASICITIES OF THE AMINES IS JUST OPPOSITE TO BASICITY OF AMINES IN AQEUOUS PHASE .. EXPLAIN
Write a short note to describe how to test a gas to see if it was hydrogen or not?
The equation S = k in W relates entropy to W, a measure of the number of different molecular level arrangements of the system.In the preceding developments it was unnecessary to attempt to reach any "explana
density of water is 1g/mL.The concentration of water in mol/litre is
If a gas can be described by the Clausius equation of state: P (V-b) = RT Where b is a constant, then: (a) Obtain an expression for the residual vo
1. Define Faraday's first law of electrolysis 2. define Faraday's second law of electrolysis
Help me to solve this problem. An aqueous solution of glucose was prepared by dissolving 18 g of glucose in 90 g of water. The relative lowering in vapour pressure is: (a) 0.02 (b)1 (c) 20 (d)180
living beings are made up of organic and inorganic substances.according to their complexity of their molecules how can ach of these substances be classified?
18,76,764
1957176 Asked
3,689
Active Tutors
1454976
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!