If 700 ml of perchloroethylene (C2Cl4), SpG =1.62, spills and completely evaporates in a room 60ft x 30ft x 15ft. What is the concentration of perchloroethylene present in the room? Express the concentration in PPM.

Q: If the atmospheric burden of CO2 increases by 27.0 Gt (gigatonnes, 1Gt= 1 x 1012kg) over a given…

A: Given:  Current CO2 concentration = 408.3 ppm Increase in CO2 atmospheric burden = 27 GT = 27 x 1012…

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

A: Given;           Molar concentration =290 PPm           Molar mass of CS+ =132.91 g/mol…

Q: A 15 meter by 12-meter pool of water has a depth of 2.2 meters. What mass of silver ion is present…

A: Volume = area x depth  Given,  15 meter by 12-meter pool, area = (15x12) m2 And depth = 2.2 m  Now,…

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

A:

Q: The amount of CO2 in the ocean is approximately 280 ppm. What is the mole fraction of CO2 in a liter…

A: Density of ocean water is 1027 kg/m3 280 ppm of CO2 is 280 mg/l and approximately 280 mg/kg…

Q: A 15 meter by 12-meter pool of water has a depth of 2.2 meters. What mass of silver ion is present…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Which of the following is FALSE regarding water treatment? A Settling of floc during sedimentation…

A: It discusses some of the important processes involved in the purification of water body by means of…

Q: The mercury content of a stream was believed to be above the minimum considered safe—1 part per…

A: Given: Concentration= 0.68 parts per billion Volume of water= 15.0 L Density= 0.998 g/ml

Q: 8. Which of these molecules is the least soluble in water? ОН HO. НО a. b. c. d. e.

A: Alcohols are more soluble than ethers of comparable molecular masses because alcohols form hydrogen…

Q: Dimethyl ether, CH3OCH3, undergoes gas phase decomposition to form methane, hydrogen gas, and carbon…

A: First calculate the moles of Dimethyl ether :  Moles = [ mass / molar mass ]  Moles = [ 66.92g /…

Q: n = M x V For all parts of this problem, consider 7.50 L of an 8.91 x 10 mol/L Ca(OH), solution. -…

A: Given: n = no. of moles = X M = 8.91 ×10-3 mol/L V = 7.50L

Q: A tank contains 6OL of water contaminated with Mercury at a concentration of 0.03 mg/L. Clean water…

A:

Q: Dimethyl ether, CH3OCH3, undergoes gas phase decomposition to form methane, hydrogen gas, and carbon…

A:

Q: Which of the following is the process in which there is an addition of small dose of chlorine gas to…

A: Coagulation : It is the process by which blood changes from a liquid to a gel forming a blood clot.…

Q: 4) Two notable physical properties of oxygen are its low solubility in water and a density greater…

A: We have find out the answer.

Q: What volume of 0.220 M HBr solution (in mL) is required to obtain 0.0600 moles of HBr? A) 3.67 L B)…

A:

Q: A chemical analysis shows that a sample contains 250.0 micrograms ofUranium in 4.00 x 10 4 grams of…

A: In the given problem the information provided is - A sample of observation contains grams of Uranium…

Q: How many grams of sodium chloride, NaCl, are contained in 400 mL of 20%(w/v) NaCl solution? O 20…

A: We have 400 ml of 20% (w/V) NaCl, we have to calculate the mass of solute .

Q: Which of the following is FALSE regarding water treatment? A Settling of floc during sedimentation…

A: The correct option is:

Q: A 0.200 L sample of water has a BOD of 15 ppm O2.  How much organic material (approximated as CH2O)…

A: The BOD of water is 15 ppm. BOD is the amount of oxygen required to decompose the organic matter…

Q: 5. Copper reacts with nitric acid according to the reaction below. What is the molarity of the HNO,…

A: Given data,Volume of solution=125mLVolume of…

Q: The rate at which a solid substance dissolves varies directly as the amount of undissolved solid…

A: Given, 2 grams of A dissolves in 1 hour

Q: Which of the following most likely describes surface water? Has a very high concentration of Ca2+…

A: Surface water is found on surface of the earth like river Lake Ocean rain etc

Q: A water sample contains the pollutant chlorobenzene with a concentration of 15 ppb (by mass). What…

A: Some pollutant chlorobenzene with a concentration of 15 ppb (by mass) is present in water. The…

Q: If 14.3 g of NH3 is dissolved in 375. ml of water, what is the concentration of the resulting…

A: Q1) Mass of NH3 = 14.3g Volume of water = 375ml = 0.375L Concentrate of NH3 = 14.3÷0.375g/L…

Q: The recommended limit for safe exposure to sulfur dioxide in the air is 0.000025%. What is this…

A: Given,  Mass percentage of sulfur dioxide in the air = 0.000025%  Then,  What is this concentration…

Q: A 15 meter by 12 meter pool of water has a depth of 3.0 meters. What mass of silver ion is present…

A: Parts per million (PPM) is unit of measurement used in expressing very dilute concentration level of…

Q: A typical househol vinegar contains 5.00% v/v acetic acid. If density of acetic acid is 1.05 g/mL,…

A:

Q: A drinking water plant adds 500. g of fluoride to a water tank containing 500,000 L of drinking…

A: ppm is the abbreviation of parts per million. It is equivalent to mg/L. Conversion of g into mg: 1…

Q: 1. What is the mass concentration of water vapor (g H2O per m3 of air) in a liquid-water doud at a…

A: Given,

Q: The concentration unit one part per billion (one ppb) is equivalent to one _____ of solute per _____…

A: In this question, we will see that 1ppb is equivalent to which unit.  ppb and ppm both are…

Q: What volume of 0.220 M HBr solution (in mL) is required to obtain 0.0600 moles of HBr? A) 3.67 L B)…

A:

Q: 8. All of the following affect the rate of solution EXCEPT temperature nature of substances particle…

A: To identify: The parameter that does not affect the rate of reaction.

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

A:

Q: A 40.440.4 g sample of ground water is found to have a lead concentration of 15.8915.89 ppm.…

A: Given : Mass of ground water sample = 40.4 g And concentration of lead i.e Pb = 15.89 ppm

Q: Should we ignore changes in density of water when dealing with high concentration of sludge or…

A: The change in the density of water is high with an increase in the concentration of sludge. However…

Q: A river pollutant is found to have a concentration of 0.0031 % m/v. If the density of the river…

A: Given  %(m/v) = 0.0031 %  density of solution = 1.183 gram/mL  Concentration of the pollutant in ppm…

Q: 6.67 x 10-3 g of arsenic (As) is found in a 0.600 L sample of water. If the density of this sample…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: You can purchase nitric acid in a concentrated form that is 70.3% HNO3 by mass and has a density of…

A: SOLUTION: Step 1: 70.3 % means 70.3 g of HNO3 in 100 g of solution. The molarity of HNO3 is…

Q: A sample of air is determined to have an NO2 concentration of 75.7 ug/m3. What is this concentration…

A:

Q: What is the most nearly the combined volume of 1.0g of hydrogen gas and 7.0g of helium gas when…

A: Mass of hydrogen gas = 1.0 g Mass of helium gas = 7.0 g Temperature T = 35 °C = 35 + 273.15 K =…

Q: A 2.20−L sample of water contains 165.0 μ g of lead. Calculate the concentration of lead in ppm.

A:

Q: What is the molar concentration of solution in 250 ml 5% (w/v) CuCl; solution? Please choose one:…

A: we have to calculate the molar concentration

Q: Give 5 examples of freshwater organisms and their dissolved oxygen requirements.

A: Answer Example 1: Freshwater FluctuationsMean dissolved oxygen concentrations in the Pompton River…

Q: 1. What is the volume (in liters) occupied by 49.8 g of HCl at STP? > II

A:

Q: The partial pressure of O2 in your lungs varies from 25.0 mm Hg to 40.0 mm Hg. KH (O2 in water at…

A: From given datas  We are using Henry's equation to find the solubility of oxygen and with that we…

Q: A bottle of concentrated HClO4 has the following information on its label: gmw= 100.5, SG= 1.60; 70%…

A:

Q: If 2 liters of toluene, SpG = .86, GMW = 92.1 g/mole, spills in a room 60ft x 30ft x 15ft, what is…

A: Given: Volume of toluene = 2 L. And the dimensions of room = 60 ft × 30 ft × 15 ft