Fluoride ion is poisonous in relatively low amounts: 0.2 g of F⁻ per 70 kg of body weight can cause death. Nevertheless,in order to prevent tooth decay, F⁻ ions are added to drinking water at a concentration of 1 mg of F⁻ion per L of water. How many liters of fluoridated drinking water would a 70-kg personhave to consume in one day to reach this toxic level? How manykilograms of sodium fluoride would be needed to treat a 8.50x10^7-gal reservoir?

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Q: Copper(II) sulfate forms a bright blue hydrate with the formula CuSO4⋅?H2O(s) . If this hydrate is…

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A: 3a. The experiment was the determination of percent composition of hydrate.

Q: Calculate the theoretical yield of lead fro

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A: To determine moles of any substance present  we use following formula    moles = massmolar mass

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A:

Q: The following chemical equation has NOT been balanced.   H3PO4 + Ca(OH)2 --> Ca3(PO4)2 + H2O…

A: Given, mass of H2O = 17.94 g  Molar mass of H2O = 18.01 g/mol  Molar mass of Ca(OH)2 = 74.09 g/mol

Q: 100.0 g lead(II) nitrate is reacted with 50.00 g potassium iodide (in plenty of water). How many…

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Q: 13. The circumference of the earth is approximately 24,900 miles. Given that the radius of a gold…

A:

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Q: A sunscreen preparation contains 2.50% by mass benzyl salicylate (2.50g benzyl salicylate/100g…

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Q: 7) How many kilograms is a 27 oz. bag of M&M's? 8) How many kilometers can a car travel on 19…

A: Answer 7) 1 oz = 0.02835 kg 27 oz  =27*0.02835 kg  = 0.76545 kg so answer is 0.77 kg   Answer 8) 1…

Q: A laboratory procedure calls for making 510.0 mL of a 1.2 M KNO3 solution. Part A How much KNO3 in…

A: Given, Molarity of solution = 1.2 M volume of solution = 510.0 mL = 0.51 L we are asked to calculate…

Q: Ascorbic acid (C₆H₈O₆) is also known as Vitamin C. How many molecules of C₆H₈O₆ does a Vitamin C…

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Q: A sample contains one or more of the ions: aluminum, calcium, copper(II), iron(III); upon addition…

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Q: experiment was done to determine the composition of a mixture of sodium chloride and sodium…

A:

Q: Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and…

A: Given reaction: C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 We have to find the yield of aspirin when 2.10 g of…

Q: If each of the 100 million automobiles contains 1.3 kg of CFC−12 and leaks 29 % of its CFC−12 into…

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Q: 1. Calculate the theoretical percentage of water for the following hydrates. (a) manganese(II)…

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Q: When Kay added 30 g of hydrochloric acid (HCI) to 65 g of Zn, bubbles appeared and a white…

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Q: Lithium metal has an atomic radius of 152 pm. The molar mass of lithium is 6.94 g/mol and Avogadro`s…

A: Atomic radius = 152 pm = 152 × 10-10 cm  Avadagro constant = 6.022 × 1023  per mol  Molar mass of…

Q: A chemist prepares a solution of aluminum sulfite flask to the mark with water. Calculate the…

A: The amount of aluminum sulfite given is .The volume of solution is .To find the concentration in…

Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".