The maximum acceptable concentration of fluoride in tap water is 1.5mg/L. Express this concentration in ppm. Then figure what vo
1 answer:
Given that the maximum acceptable concentration of fluoride in tap water = 1.5 mg/L.
1 mg/L is equivalent to 1 parts per million(ppm).
Converting 1.5 mg/L to ppm:
So the maximum acceptable concentration of fluoride in tap water in ppm is 1.5 ppm.
Finding out the volume of tap water that would contain 1.0 g fluoride:
Converting 1.0 g fluoride to mg:
Taking the concentration of fluoride in tap water to be 1.5 mg/L,
Volume of tap water that contains 1000 mg fluoride
=
Rounding the volume to three significant figures, 667 mL of tap water.
You might be interested in
Answer : The final temperature of the copper is,
Solution :
Formula used :
where,
Q = heat gained = 299 cal
m = mass of copper = 52 g
c = specific heat of copper =
= final temperature = ?
= initial temperature =
Now put all the given values in the above formula, we get the final temperature of copper.
Therefore, the final temperature of the copper is,
Explanation:
When pH of the solution is 11.
..(1)
At pH = 11, the concentration of ions is
.
When the pH of the solution is 6.
..(2)
At pH = 6, the concentration of ions is
.
On dividing (1) by (2).
The ratio of hydrogen ions in solution of pH equal to 11 to the solution of pH equal to 6 is .
Difference between the ions at both pH:
This means that Hydrogen ions in a solution at pH = 7 has ions fewer than in a solution at a pH = 6