You are the public health officer in the water treatment facility for a city of 50,000 people. A concentration of 1.0 ppm fluride in the drinking water is sufficient for the purpoise of helping to prevent tooth decay. The compound normally chosen for fluoridation is the same as is found in some toothpastes, sodium fluoride (NaF). Calculate how many kilograms of sodium fluride you will need to purchase in order to fluoridate the city's water supply for one year, based upong your estimate that the average daily consumption of water is 150 gallons per person You will find the following information helping in solving the problem below. Sodium fluride, NaF, is 45.0% fluride by mass. 1 ppm means "one part per million" by mass, e.g. 1 g of fluoride peron million grams of water 1 gallon = 3.79 L 1 year = 365 days 1 ton = 2000lb
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
You are the public health officer in the water treatment facility for a city of 50,000 people. A concentration of 1.0 ppm fluride in the drinking water is sufficient for the purpoise of helping to prevent tooth decay. The compound normally chosen for fluoridation is the same as is found in some toothpastes, sodium fluoride (NaF). Calculate how many kilograms of sodium fluride you will need to purchase in order to fluoridate the city's water supply for one year, based upong your estimate that the average daily consumption of water is 150 gallons per person
You will find the following information helping in solving the problem below. Sodium fluride, NaF, is 45.0% fluride by mass.
1 ppm means "one part per million" by mass, e.g. 1 g of fluoride peron million grams of water
1 gallon = 3.79 L
1 year = 365 days
1 ton = 2000lb
1 lb = 453.6 g
Density of water = 1.0 g/mL
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