A water has a temperature of 10o C and pH = 8. What should be the...

A water has a temperature of 10^o C and pH = 8. What should be the C.t value for 3-log Giardia removal using (a) chlorine, (b) chloramine. Assume a chlorine residual of 1.0 mg/L is required. If the chlorine dosage required to achieve this residual is 1.6 mg/L, what is the chlorine requirement in lbs/d for a 2 mgd water plant.

Expert Solution

Ally Wells answered 11 months ago

What is the pH of a 3.4x10-8 M HClO4 solution at room temperature? A.7.1 B.7.0 C.5.3...

What is the pH of a 3.4x10-8 M HClO4 solution at room temperature? A.7.1 B.7.0 C.5.3 D.6.9

What is the pH at 25 ∘C of water saturated with CO2 at a partial pressure...

What is the pH at 25 ∘C of water saturated with CO2 at a partial pressure of 1.20 atm ? The Henry's law constant for CO2 at 25 ∘C is 3.1×10−2mol/L-atm. The CO2 is an acidic oxide, reacting with H2O to form H2CO3.

What will the final temperature of 400 mL sample of water at 39.2°C be if 36,555...

What will the final temperature of 400 mL sample of water at 39.2°C be if 36,555 J of heat were added. a.88.1°C b.58.2°C c.77.0°C d.61.0°C How much heat is produced when 6.26g of zinc metal reacts with oxygen gas under standard conditions? Use standard enthalpies of formation provided in your textbook. a. 35.5 kj b.267 kj c.1021 kj 68.7 kj Ethanol, C2H5OH, is used as a primary fuel for motor vehicles in some countries like brazil,The balanced chemical equation for...

A. Given Kw for water is 2.4x10-14 at 37 deg C. What is the pH of...

A. Given Kw for water is 2.4x10-14 at 37 deg C. What is the pH of a natural aqueous solution at 37 deg C? B. If Ka of a weak acid is 5.0x10-6. What is the pH of a 0.43 M solution of this acid? C. What concentration of SO3 2- is in equilibrium with Ag2SO3(s) and 7.60x10-3 M Ag+?

1)A geothermal reservoir in Indonesia has a downhole fluid of water at a temperature of 235°C....

1)A geothermal reservoir in Indonesia has a downhole fluid of water at a temperature of 235°C. The specific enthalpy of the fluid is 2500 kJ/kg, and consists of two phases. What is the quality of the steam?

The water in a lake has a pH of 6. The water is in equilibrium with...

The water in a lake has a pH of 6. The water is in equilibrium with atmospheric carbon dioxide which has a pressure of PCO2= 10-3.5. What is the concentration of the carbonate ion (CO32-) in the water? The Henrys Constant for carbon dioxide is KH = 10-1.5 atm•L/mol Other Info: R= 0.08206 atm•L/mole•K = 1.987 cal/mole•K = 8.314 J/mole•K 1 Joule = Newton • Meter 1 atm = 1.013 X 105 N/m2 = 1.013 X 105 Pa 1 gallon...

What is the final temperature when 76.8 g of water at 73.1°C is mixed with 21.5...

What is the final temperature when 76.8 g of water at 73.1°C is mixed with 21.5 g of water at 29.5°C? (The specific heat of water is 4.184 J/g·°C.)

calculate the pH of a 4.20x10^-8 M solution of HBr with water

Table 1: Temperature of Frozen Water Over Time Time (min.) Temperature (°C) Observation 0 -12 Water...

Table 1: Temperature of Frozen Water Over Time Time (min.) Temperature (°C) Observation 0 -12 Water is frozen 5 0 Water is frozen 10 1 Ice is attached to thermometer but unstuck from test tube 15 14 There is a pool of water in the bottom of the test tube 20 2 The pool of water is flightly bigger, ice chunk is getting smaller 25 4 The ice chunk is over halfway melted 30 5 The Ice chunk is over...

A copper ball of temperature 100 °C is immersed to a water bath of 50 °C....

A copper ball of temperature 100 °C is immersed to a water bath of 50 °C. After 10 minutes the temperature of the ball is 80 °C and the temperature of the water is 60 °C. You may assume that Newton’s Law of Cooling is obeyed and all the heat lost by the ball is absorbed by the water. Find the equilibrium temperature of the ball as a function of time.

Question