Drinking water contains 1.50 ppm sodium fluoride. How many liters of water could be fluoridated using...
Drinking water contains 1.50 ppm sodium fluoride. How many liters of water could be fluoridated using 0.735 lb of NaF (1.0 lb = 454 g).
Homework Answers
Add Answer to:
Drinking water contains 1.50 ppm sodium fluoride. How many
liters of water could be fluoridated using...
What is the concentration (in units of ppm) of sodium fluoride in tap water that has...
What is the concentration (in units of ppm) of sodium fluoride in tap water that has been fluoridated by the addition of 11.7 mg of NaF for every 20.0 kg of solution?
Parts per million (ppm) strengths 31 If drinking water contains 0.7 ppm of fluoride, how much...
Parts per million (ppm) strengths 31 If drinking water contains 0.7 ppm of fluoride, how much fluoride (in milligrams) would be present in 1 litre of water?
A mom is concerned about fluoridation in drinking water. She has read that the maximum contaminant...
A mom is concerned about fluoridation in drinking water. She has read that the maximum contaminant concentration level goal for fluoride in drinking water is 4 ppm. The mom has discovered that her drinking water supply contains 0.8 ppm of sodium fluoride. How many milligrams of sodium fluoride are contained in one liter of drinking water containing 0.8 ppm of sodium fluoride? What is the ratio strength concentration of sodium fluoride in drinking water that contains 0.8 ppm 1I. of...
please help ASAP water has fluoride ion added in many parts of U.S.A water sample contains...
please help ASAP water has fluoride ion added in many parts of U.S.A water sample contains 0.70 ppm F- a. what mass of F- is contained in one liter of this water? density is 1.00 g/mL b. what mass of CaF2 will result if all the water is evaporated from a 1.0 L sample of 0.70 ppm fluoridated water?
A liquid feeder applies a 4% saturated sodium fluoride solution to drinking water. This liquid feeder...
A liquid feeder applies a 4% saturated sodium fluoride solution to drinking water. This liquid feeder increases the fluoride concentration from the natural background level of 0.4 mg F/liter to 1 mg F/liter. The commercial sodium fluoride powder contains 45% F by weight. Determine: 1. The pounds of NaF required per million gallons of water treated. 2. The dosage of 4% NaF solution per million gallons.
To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.900...
To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.900 ppm fluoride (F–). (a) How many grams of F– must be added to a cylindrical water reservoir having a diameter of 6.44 × 102 m and a depth of 47.26 m? (b) How many grams of sodium fluoride, NaF, contain this much fluoride?
9) A drinking water plant adds 500 grams of fluoride to a water tank containing 500,000...
9) A drinking water plant adds 500 grams of fluoride to a water tank containing 500,000 liters of drinking water. What is the concentration of fluoride in the water in parts-per-million (ppm)? 10) A bottle of rubbing alcohol contains 75% by mass 2-propanol (C:HsO) in water. What are the mole fractions of 2-propanol and water in the solutions?
A toothpaste contains 0.24% by mass sodium fluoride used to prevent dental caries and 0.30% by...
A toothpaste contains 0.24% by mass sodium fluoride used to prevent dental caries and 0.30% by mass triclosan C12H7Cl3O2, a preservative and antigingivitis agent. One tube contains 119 g toothpaste.a. How many moles of NaF are in the tube of toothpaste?b. How many fluoride atoms F– are in the tube of toothpaste?c. How many grams of sodium ion Na+ are in 1.50 g toothpaste?d. How many molecules of triclosan are in the tube of toothpaste?
The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from...
The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between sodium metal and fluorine gas. Which properly represents the balanced chemical equation for this reaction? Na(s) + F2(g) → NaF2(s) Na(s) + F(g) → NaF(s) 7Na(s) + F(g) → Na7F(s) 2Na(s) + F2(g) → 2Na2F(s) 2Na(s) + F2(g) → 2NaF(s) Why is it important to understand this equation? What do you think could happen if this is incorrect?
The maximum contaminant level, of copper ions in drinking water is 1.3 ppm. If your drinking...
The maximum contaminant level, of copper ions in drinking water is 1.3 ppm. If your drinking water contains .424 ppm Cu, how many ions of copper(I) will be in a sample of drinking water?
Parts per million (ppm) strengths 31 If drinking water contains 0.7 ppm of fluoride, how much fluoride (in milligrams) would be present in 1 litre of water?
A mom is concerned about fluoridation in drinking water. She has read that the maximum contaminant concentration level goal for fluoride in drinking water is 4 ppm. The mom has discovered that her drinking water supply contains 0.8 ppm of sodium fluoride. How many milligrams of sodium fluoride are contained in one liter of drinking water containing 0.8 ppm of sodium fluoride? What is the ratio strength concentration of sodium fluoride in drinking water that contains 0.8 ppm 1I. of...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago