Question

(a) Calculate the mass of sodium chloride and water required to prepare 300g of 30% solution of sodium chloride.
(b) Write any two characteristics of hydrogen gas.
(c) What is the use of chlorination in the water purification system?
(d) What do you mean by pure substances

Please answer fast

Answer 1

Answer:

Characteristic test for hydrogen (H

2

) gas can be done by bringing a burning candle near the source of hydrogen. On doing so, hydrogen gas burns with a squeaky pop sound.