Answer:
--- Oven Cleaner
--- Water
--- Blood
--- Vinegar
Step-by-step explanation:
The given molar concentration are:[Missing from the question]
Oven Cleaner: [h+] = 
Water: [h+] = 
Blood: [h+] = 
Vinegar: [h+] = 
Required
Determine the pH
pH is calculated using:

So, we have:
Oven Cleaner:

Using a calculator, we have:

Water:

Using a calculator, we have:


Blood:

Using a calculator, we have:


Vinegar:

Using a calculator, we have:


Question doesn’t make sense
Answer:3.25 gallons
Step-by-step explanation:48 miles÷2 gallons =24 miles
Every 24 miles equals 1 gallon
So 78 ÷ 24= 3.25
3.25 gallons