Answer:
3.5
Step-by-step explanation:
Given : the hydronium ion concentration is 
in orange juice
To Find: what is the pH?
Solution :
Definition of pH : pH is the negative log of the molar hydrogen ion concentration
Formula of pH : - log [H+]
Since we are given H+ =
So, substituting this value in formula :
![pH = - log [3.4*10^{-4}]](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B3.4%2A10%5E%7B-4%7D%5D)
![pH = - log [3.4*0.0001]](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B3.4%2A0.0001%5D)
![pH = - log [0.00034]](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B0.00034%5D)
pH = 3.468≈3.5
Thus the pH is 3.5
Answer:
25% of people said that they were satisfied.
Step-by-step explanation:
700 x 4 = 2,800 which means 700 is 1/4 of 2,800 and 1/4 as a percentage is 25%
Answer:
39.27
Step-by-step explanation:
Calculate whole area of circle - pi5^2 = 78.54
Divide answer by 2 as only half of the circle is shaded - 78.54/2 = 39.27
Answer:
Extracting out that inner right angle.
Hypotenuse = 8
Height = h
Adjacent :
Height, h :
Answer:
i think it's 9 just correct me if I'm wrong
