solve this science question q 18 and q 19
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18. DNA contains the blueprints for how to make the proteins and other molecules that make the cell run. Without it, cells would be unable to make the molecules they need to survive, and thus would die. Cell replication is the process of going from one cell to two cells. DNA is the genetic material and basis of life.
19. When ammonium chloride dissolves in water it makes ammonium ion and chloride ion. What you want to consider is the hydrolysis (reaction with water) of each ion.
Chloride is not acidic. Chloride ion doesn't hydrolyze because it is the anion of a strong acid (HCl).
Ammonium ion reacts with water to make hydronium ion (H3O+) and ammonia. It is this hydronium ion that makes the solution acidic.
NH4+ + H2O --> NH3 + H3O+
19. When ammonium chloride dissolves in water it makes ammonium ion and chloride ion. What you want to consider is the hydrolysis (reaction with water) of each ion.
Chloride is not acidic. Chloride ion doesn't hydrolyze because it is the anion of a strong acid (HCl).
Ammonium ion reacts with water to make hydronium ion (H3O+) and ammonia. It is this hydronium ion that makes the solution acidic.
NH4+ + H2O --> NH3 + H3O+
danish60:
ur 2bd answer doesnt seems good.
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1. DNA coping is essential for certain variations
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