The answer is b.) Levi crosses a horse with a donkey to a create a mule. The mule is stronger than both of its parents.
3.125 i believe is the answer
Answer: The percentage composition of nitrogen , hydrogen and oxygen is 22.2 % , 1.59 % and 76.2% respectively.
Explanation:
Percentage composition is defined as the ratio of mass of substance to the total mass in terms of percentage.
Percentage composition=
a) 

b) 

c) 

The percentage composition of nitrogen , hydrogen and oxygen is 22.2 % , 1.59 % and 76.2% respectively.
The hydronium ions increase and the ph goes down.