Let the second no. be x
-3x = 21 → x = 21/-3 → x = -7
PH can be calculated using the following equation
pH = -log [H₃O⁺]
for apple juice the hydronium /hydrogen ion concentration is 0.0003
pH = -log (0.0003)
pH = 3.5
correct answer is C
For ammonia
pH = -log (3.1 x 10⁻⁹)
pH = 8.5
answer should be 8.5
Answer:
The polygon that is made is a triangle
Step-by-step explanation:
I think It's a>-3, maybe.
