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?
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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 0.700...
To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.700 ppm fluoride, F. How many grams of F must be added to a cylindrical water reservoir having a diameter of 1.43 x 102 m and a depth of 88.52 а m?
To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.800...
To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.800 ppm fluoride (F
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...
Isopropyl alcohol is mixed with water to produce a 38.0% (v/v) alcohol solution. How many milliliters...
Isopropyl alcohol is mixed with water to produce a 38.0% (v/v) alcohol solution. How many milliliters of each component are present in 875 mL of this solution? Assume that volumes are additive. alcohol: mL water: ml The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 695 mL of a 38.0% (w/v)...
Q3) A drug compound for anticancer treatment, Platinol has a base structure of Pt(NH3)2Cl2. A var...
Q3) A drug compound for anticancer treatment, Platinol has a base structure of Pt(NH3)2Cl2. A variant form of the drug has the formula Pt2(NH3)4Cl3. For the variant form, calculate the mass percent of platinum. hint: Molar masses used Pt 195.084g/mol, N 14.0067g/mol, H 1.008g/mol, and Cl 35.453 g/mol. Q4) When Barium (density is 3.5 g/mL) reacts with sulfur (density is 2.04 g/mL) to form barium sulfide, each barium atom reacts with one sulfur atom. The mass ratio of barium to...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d)...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...
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To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.700 ppm fluoride, F. How many grams of F must be added to a cylindrical water reservoir having a diameter of 1.43 x 102 m and a depth of 88.52 а m?
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...
Isopropyl alcohol is mixed with water to produce a 38.0% (v/v) alcohol solution. How many milliliters of each component are present in 875 mL of this solution? Assume that volumes are additive. alcohol: mL water: ml The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 695 mL of a 38.0% (w/v)...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
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