Answer:
I think the answer should be 147
Explanation:
Answer:
sorry if this is a bit late but i know what your talking about and your answer would be 8
stay happy!!
Low density. Makes it light and able to bet in the air.
Given the population of city = 150,000 people
Volume of water consumed by each person = 660.0 L
Total volume consumed in the city every year = *=/year
The required fluoride concentration is 1.0 ppm
1.0 ppm means 1.0 mg fluoride per liter of water
Calculating the mass of NaF that must be added in kg:
=
I’m not sure what a buretteis