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?
Homework Answers
![Ansed @ Gien that, 500 g flers de added in 500000 L of water. That is 500000 mg in Soooool [:19 = 1000mg] of water. Hence, PP](http://img.homeworklib.com/questions/680e27c0-a5a1-11eb-8c67-17bc7f4468b9.png?x-oss-process=image/resize,w_560)
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9) A drinking water plant adds 500 grams of fluoride
to a water tank containing 500,000...
A bottle of rubbing alcohol contains 75% by mass 2-propanol (C2H8O) in water. What are the...
A bottle of rubbing alcohol contains 75% by mass 2-propanol (C2H8O) in water. What are the mole fractions of 2-propanol and water in the solutions?
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?
5. (20 points) A tank with a capacity of 500 liters contains 200 liters of water...
5. (20 points) A tank with a capacity of 500 liters contains 200 liters of water with 100 grams of a material in solution. Water containing a concentration of 1 g/liter of the material enters the tank at a rate of 3 liters/min, and the well-stirred mixture leaves the tank at a rate of 2 liters/min. Find the amount of mass of the material in the tank at any given time t prior to when the tank begins to overflow.
-2t A tank initially contains 10 liters of water and 5 grams of salt. Salt water...
-2t A tank initially contains 10 liters of water and 5 grams of salt. Salt water containing 3+ e grams of salt per liter is pumped into the tank at a rate of 2 liters per minute. The solution of salt water is instantaneously, perfectly mixed and then pumped out at a rate of 2 liters per minute. Determine when, to three decimal places, the concentration of the salt leaving the tank is within 0.01 grams/liter of the salt entering...
A tank with 500 liters of water initially contains 4g of calcium. Water with a concentration of 3...
a tank with 500 liters of water initially contains 4g of calcium. Water with a concentration of 3 mg/L is pumped into the tank at a rate of 1L/min and the mixture is pumped out at the same rate. (a) Write a differential equation and its initial condition for, y(t), the total amount of calcium in grams in the tank. (t is measured in minutes, 1g = 1000mg) (b) Find the general solution to this differential equation. (c) Find the...
Chloroform (CHCI3) has a Drinking Water standard concentration of 0.10 mg/L What is this concentration expressed as par...
Chloroform (CHCI3) has a Drinking Water standard concentration of 0.10 mg/L What is this concentration expressed as parts per million (ppm)? Typical consumption Risk Analysis L/day for 70 years. How many grams of CHCI3 would the average human 1. a. b. assumes the average human drinks 2.2 during a lifetime at the Drinking Water standard concentration? consume Find the Volume of 1 mole of an ideal gas at 1.2 atm and 80°C 2. The Air Quality Standard for sulfur dioxide...
Hard water normally contains mineral ions, such as Ca2+ and Mg2+ ions, from minerals that dissolved...
Hard water normally contains mineral ions, such as Ca2+ and Mg2+ ions, from minerals that dissolved in the ground water. For water of low hardness, the concentration of Ca2+ ions is usually expressed as ppm CaCO3 in the water sample. Parts per million (ppm) is defined as one part of solute mass per 1,000,000 parts of solution mass, as shown in the following equation. Please note, the unit of denominator and numerator needs to be the same. Since ppm expresses...
The mole fraction of nickel(II) acetate, Ni(CH3COO)2, in an aqueous solution is 3.76x102 The percent by...
The mole fraction of nickel(II) acetate, Ni(CH3COO)2, in an aqueous solution is 3.76x102 The percent by mass of nickel(II) acetate in the solution is 0 Submit Answer An aqueous solution is 12.0% by mass ammonia NH3 The mole fraction of ammonia in the solution is Submit Answer Use the References to access important values if needed for this question. EPA regulations for harmful contaminants in drinking water set an upper limit of 4.00x103 mg/L for beryllium. Suppose that your water...
If 0.1 g of Ferric sulfate Fe_2(SO_4)_3 is added to 1 L of water, Express the...
If 0.1 g of Ferric sulfate Fe_2(SO_4)_3 is added to 1 L of water, Express the concentration of Ferric sulfate in the following in terms of (a) mg/L, (b) ppm, (c) molarity, (d) % weight (Assume the specific gravity of solution is 1.0) A 10-litre cylinder containing 500 g of chlorine gas is to be used for disinfection of water. What will be the pressure inside the cylinder at a temperature of 20 degree C? A digester gas holding tank...
Could please help me with my homework? Thanks in advance! A solution is made by dissolving...
Could please help me with my homework?
Thanks in advance!
A solution is made by dissolving 13.5 g of glucose (C_6H_12O_6) in 0.100 kg of water. What is the mass percentage of solute in this solution? What is the molarity of this solution? Assume that the density of approximately 1.00 g/mL A solution with a density of 0.876 g/mL contains 5.0 g of toluene (C_7H_8) and 225 g of benzene (C_6H_6). Calculate the molarity of the solution. A 2.5-g sample...
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?
5. (20 points) A tank with a capacity of 500 liters contains 200 liters of water with 100 grams of a material in solution. Water containing a concentration of 1 g/liter of the material enters the tank at a rate of 3 liters/min, and the well-stirred mixture leaves the tank at a rate of 2 liters/min. Find the amount of mass of the material in the tank at any given time t prior to when the tank begins to overflow.
-2t A tank initially contains 10 liters of water and 5 grams of salt. Salt water containing 3+ e grams of salt per liter is pumped into the tank at a rate of 2 liters per minute. The solution of salt water is instantaneously, perfectly mixed and then pumped out at a rate of 2 liters per minute. Determine when, to three decimal places, the concentration of the salt leaving the tank is within 0.01 grams/liter of the salt entering...
Chloroform (CHCI3) has a Drinking Water standard concentration of 0.10 mg/L What is this concentration expressed as parts per million (ppm)? Typical consumption Risk Analysis L/day for 70 years. How many grams of CHCI3 would the average human 1. a. b. assumes the average human drinks 2.2 during a lifetime at the Drinking Water standard concentration? consume Find the Volume of 1 mole of an ideal gas at 1.2 atm and 80°C 2. The Air Quality Standard for sulfur dioxide...
The mole fraction of nickel(II) acetate, Ni(CH3COO)2, in an aqueous solution is 3.76x102 The percent by mass of nickel(II) acetate in the solution is 0 Submit Answer An aqueous solution is 12.0% by mass ammonia NH3 The mole fraction of ammonia in the solution is Submit Answer Use the References to access important values if needed for this question. EPA regulations for harmful contaminants in drinking water set an upper limit of 4.00x103 mg/L for beryllium. Suppose that your water...
If 0.1 g of Ferric sulfate Fe_2(SO_4)_3 is added to 1 L of water, Express the concentration of Ferric sulfate in the following in terms of (a) mg/L, (b) ppm, (c) molarity, (d) % weight (Assume the specific gravity of solution is 1.0) A 10-litre cylinder containing 500 g of chlorine gas is to be used for disinfection of water. What will be the pressure inside the cylinder at a temperature of 20 degree C? A digester gas holding tank...
Could please help me with my homework?
Thanks in advance!
A solution is made by dissolving 13.5 g of glucose (C_6H_12O_6) in 0.100 kg of water. What is the mass percentage of solute in this solution? What is the molarity of this solution? Assume that the density of approximately 1.00 g/mL A solution with a density of 0.876 g/mL contains 5.0 g of toluene (C_7H_8) and 225 g of benzene (C_6H_6). Calculate the molarity of the solution. A 2.5-g sample...
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