Which parameter is measured by determining the drop in dissolved oxygen in a sealed water or wastewater sample for a fixed number of days?     microbial count     COD     BOD     phosphorus     nitrogen

Q: The molar concentration of 290 ppm of Cs* (132.91 g/mol) in a solution that has a specific gravity…

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Q: The binary compound M2X has a solubility of 7.4 × 10−7 mol/L and a molar mass, ℳ = 160.53 g/mol.…

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Q: List the common steps taken in treating water for a public water system?

A: The common steps taken in treating water for a public water system have to be listed below.

Q: Sewage containing organic waste should not be disposed into water bodies because it causes major…

A: 1. Every animal survives due to the presence of oxygen in the environment.  2. Animals which lies in…

Q: help please answer in text form with proper workings and explanation for each and every part and…

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Q: A water sample was tested for BOD5, which was determined to be 50 mg/L. Which of the description is…

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Q: THE ACCEPTABLE LEVEL OF COPPER THAT CAN BE FOUND IN DRINKING WATER IS NO MORE THAN 1.3 ppm. A SAMPLE…

A: Given : Safe concentration of copper in drinking water < 1.3 ppm. Mass of water sample = 5000 Kg…

Q: Which biological and physicochemical aspects must be taken into account when using CT values to…

A: When using CT values to disinfect water assets following a water quality event, several biological…

Q: aqueous layer OH (acid) "HCI layer" + dilute NaOH (aq) solution + NaCl (aq) (neutral) (base) +…

A: In aqueous solution, ionic compounds are mostly soluble where in organic layer organic compounds are…

Q: What is the difference between hard and soft water? Use the editor to format your answer

A: Hardness and softness are used as a parameter whether the water is safe for drinking purpose.

Q: What is water hardness? Differentiate temporary from permanent water hardness

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Q: Explain why dead zones are often located along heavily inhabited coastlines.

A: Dead zone Less oxygen or hypoxic, areas in the world's oceans and lakes are called dead zones. All…

Q: A student prepares a 0.15M aqueous solution of butanoic acid (C3H,CO₂H). Calculate the fraction of…

A: This question is from chapter Ionic equilibrium where we are dealing with a weak acid like butanoic…

Q: 1. A 0.68 gram sample of a volatile liquid was heated to 358 K. The gas occupied 265 mL of space at

A: Note: Dear student as per the guidelines only the 1st quetions  is allowed to answer. from ideal gas…

Q: If 700 ml of perchloroethylene (C2Cl4), SpG =1.62, spills and completely evaporates in a room 60ft x…

A: Given: Volume of perchloroethylene =700 mL. The specific gravity of perchloroethylene = 1.62 And the…

Q: A student prepares a 0.28 mM aqueous solution of propionic acid (C₂H₂CO₂H). Calculate the fraction…

A: Propionic acid is a weak acid. It doesn't completely dissociate in an aqueous solution to form…

Q: A sample of seawater contains 1.9 g of calcium ions in 5364 kg of solution. What is the calcium ion…

A: Given  Mass of solute (calcium ions) = 1.9 g Mass of solution = 5364 kg = 5346×103 g Concentration…

Q: A student prepares a 0.58M aqueous solution of propionic acid (C,H,CO,H). Calculate the fraction of…

A: Given,molarity of propionic acid ( C2H5CO2H ) = 0.58 Mfrom the aleks data table:Ka of propionic acid…

Q: List the major cations, anions, and gases present in natural waters?

A: The solution is given below -

Q: In 1999, scientists reported that groundwater from a waste site near Atlantic City, New Jersey had…

A: Parts per billion or ppb is the 1 micrograms (ug) of solute per 1 Liter of the solution,…

Q: The Earth’s oceans have a salinity of 35. What is the concentration of dissolved salts in seawater…

A: Given that salinity of earth’s ocean is 35. Thus, mass of salt in one kilogram of water is 35 g and…

Q: Which substance is found at high concentrations in surface waters and decreasing concentrations with…

A: Oxygen is found at high concentration in surface water due to two reson.. 1) the surface water is…

Q: List and describe the two main methods of seawater desalination.

A: Desalination plants are providing drinking water to one percent of the world population. The process…

Q: Room temperature:   295.9 K Barometric pressure:   769.0 mmHg Vapor of water:   21.1 mmHg Volume of…

A: The balanced chemical reaction of dissociation of hydrogen peroxide is given by

Q: Which of the following is FALSE regarding water treatment? A) Algae removal from water can be done…

A: Aeration is a process that make water and air to come in close contact so as to remove the dissolved…

Q: Some chemical compounds are listed in the first column of the table below. Each compound is soluble…

A: C₂H₅NH₂ (ethylamine)Important species present when dissolved in water:C2H5NH3​+ ,OH-, C2H5NH2,…

Q: __________ is a measure of energy randomization or energy dispersal in a system.…

A: According to the first law of thermodynamics, the energy cannot be created or destroyed but the…

Q: The limit to the level of sulfur dioxide (SO,) in ambient air, set by the Turkish National Ambient…

A: Allowed concentration of SO2 = 350 ug/m^3 Now, 1 m^3 = 1000 L So, Allowed concentration = 350/1000…

Q: The fish canning industry has a waste effluent with the specification as follows: BOD5 = 150 mg/L,…

A: High levels of BOD and COD can be treated with the help of ozone. Ozone is an oxidant and is soluble…

Q: What is the purpose of environmental remediation? to restore water to its original purity levels to…

A: Environmental remediation has the purpose of lower the exposure of radiation from contaminated…

Q: ion of sodium (Na+) in a sample is 0.1 mM. What is the concentr 23 g/mol

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Q: The molar concentration of 290 ppm of Cs (132.91 g/mol) in a solution that has a specific gravity of…

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Q: A 0.1ml serum sample was analyzed for glucose content and found to contain 250 ng. The concentration…

A: Given that:  Volume of serum sample = 0.1ml =0.1ml×1L/1000ml = 10-4L Mass of glucose = 250ng =…

Q: Oxygen is soluble in water, much to the benefit of aquatic life forms. At 25 °C, the solubility of…

A: Given: Solubility of oxygen or concentration (in g/mL)=7×10-6 g/mL Pressure of O2=20% atmospheric…

Q: In the water cycle, precipitation goes back to the sea by O cloud formation reverse osmosis…

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Q: Room temperature:   295.9 K Barometric pressure:   769.0 mmHg Vapor of water:   21.1 mmHg Volume of…

A: The ideal gas law equation is expressed as:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.