Measurements 1. 2.3.4.5.6.
1 answer:
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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 = 3.468≈3.5
Thus the pH is 3.5
Answer:
Option B is correct.
Step-by-step explanation:
The distance formula used is:
We need to find distance between origin and other point (3,-4,5)
Origin is: (0,0,0)
x₁ = 0, y₁ = 0, z₁ =0 and x₂= 3, y₂= -4 and z₂ = 5
Putting values in the distance formula we get:
The Distance from the origin to the point (3, −4, 5) is 7 units.
Option B is correct.