A molecules of ____________ contains a triple bond.
(hydrogen, ammonia, nitrogen)
(iii) The PH of a pure sample of water of 298K is always ______.
(7, <7, >7 )
(iv) The anion which imparts purple colour to its solution is
__________. (sulphate / acetate / chromate / permanganate)
(v) Chemists commonly express the amount of any substance in
the unit of _____________. (mass / density / mole / volume)
Answers
Answered by
2
Nitrogen
7
permanganate
mole
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Answered by
3
Answer: nitrogen
7
permanganate
mole
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