Question
In: Chemistry
It is recommended that drinking water contain 1.6 ppm of fluoride. If the local reservoir has...
It is recommended that drinking water contain 1.6 ppm of fluoride. If the local reservoir has a diameter of 450.0 m and a depth of 10.0 m (V= Pi*r2 *h), how many grams of F should be added to the water in the reservoir to give the recommended concentration? If fluoride is provided by hydrogen hexafluorosilicate (H2SiF6), how many grams of H2SiF6 contain Fluoride?
Solutions
queen_honey_blossom answered 9 months agoRelated Solutions
To aid in the prevention of tooth decay, it is recommended that drinking water contain 1.10...
To aid in the prevention of tooth decay, it is recommended that
drinking water contain 1.10 ppm fluoride (F–). (a) How many grams
of F– must be added to a cylindrical water reservoir having a
diameter of 4.03 × 102 m and a depth of 55.43 m? (b) How many grams
of sodium fluoride, NaF, contain this much fluoride?
A city is considering a reservoir water as its new drinking water source. As a result,...
A city is considering a reservoir water as its new drinking
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A single lake (referred to as the “City Reservoir”) provides all the drinking water for a...
A single lake (referred to as the “City Reservoir”) provides all
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The first lake is located next to the current City Reservoir
which allows the city to reduce costs by sharing the single
original water pipe from the Reservoir to city. The second...
Determine the calcium content (in ppm) of a 100.00 mL sample of drinking water if the...
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at pH 13.0, 16.99 mL were used for an aliquot at pH 10.5.
Determine the calcium content (in ppm) of a 100.00 mL sample of drinking water if the...
Determine the calcium content (in ppm) of a
100.00 mL sample of drinking water if the following data were
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In the US, fluoride is added to drinking water. In 2015, the US Department of Health...
In the US, fluoride is added to drinking water. In 2015, the US
Department of Health [12] lowered the recommended amount of
fluoride in drinking water. Fluoride is added to drinking water to
help prevent tooth decay, but too much fluoride can lead to
fluorosis (white stains in the enamel of the teeth). A particular
city wants to check whether their drinking water meets the
specifications made by the department of health. The department of
health recommends that there should...
Fluoride, in the form of sodium silicofluoride (Na2SiF6), is commonly added to municipal drinking water to...
Fluoride, in the form of sodium silicofluoride (Na2SiF6), is
commonly added to municipal drinking water to prevent tooth decay.
It is generally added at a level of 1.0 mg/L, but its maximum
concentration level (MCL) cannot exceed 4.0 mg/L. You have been
assigned to prepare a liter of a standard solution that contains
1.000 mg/L fluoride. a. Which balance in your lab would you use to
prepare the solution? Explain why.
The Environmental Protection Agency has determined that safe drinking water should, on average, contain no more...
The Environmental Protection Agency has determined that safe
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your samples is 1.46 mg/l and the standard deviation is 0.18
mg/l.
(a) Is there convincing evidence at the α = 0.05 significance
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(b) Referring...
According to the "Guidelines for Canadian Drinking Water Quality", although fluoride (F) is beneficial in preventing...
According to the "Guidelines for Canadian Drinking Water
Quality", although fluoride (F) is beneficial in preventing tooth
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1.5mg/L. Find the maximum amount of sodium fluoride (NaF) in the kg
that can be added to 3 MG water with no fluoride. ( MG= million
gallons; mg=milligrams).
1 a) What health benefit is derived by adding fluoride to toothpaste or drinking water? What...
1 a) What health benefit is derived by adding fluoride to
toothpaste or drinking water? What are the possible hazards?
b) What is the present recommended concentration of fluoride in
Toronto’s tap water and over the counter toothpaste?
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