20. Which term best describes the process illustrated here? Semi- permeable membrane Molecule A time Molecule B а. mіxing b. dialysis c. dilution 2.

Q: A 45.9 g sample of ground water is found to have a lead concentration of 19.09 ppm. Calculate the…

A: The mass of solute in mg present in a one-kilogram solution is known as ppm (parts per million)…

Q: Which term refers to the the diffusion of water molecules through a selectively permeable…

A: There is always movement of molecule from the higher to lower concentration.

Q: The Earth’s oceans have a salinity of 35. What is the concentrationof 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: number

A: Dear student I have given answer to your question in the image format.

Q: What is the underlying process involved in dialysis?

A: Dialysis is redistribution of  of solvent/solute which occurs at an unequal rates of diffusion…

Q: HW 8 #20

A: Mixing is the process when we mix two different molecules. Since here initially and finally we have…

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A:

Q: A sodium hydroxide solution that contains 24.7 grams of NaOH per L of solution has a density of 1.18…

A: molality: It is defined as the no. of moles of solute dissolved in 1Kg of solvent. given data: given…

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A: Water contains dissolving oxygen that fish can breathe. When water is cooled, its capability to hold…

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Q: What mass of glucose (C6H12O6) is contained in 75.0 mL of a 2.00 M glucose solution? 0.150 gg 6.76…

A: Calculate number of moles of: 1 L = 0.001 mL

Q: If a deep-sea diver ascends to the surface (1 atm) from a pressure of 5 atm, the volume of the…

A:

Q: What is the importance of freezing in food when it comes to daily life?

A: There occurs  a process called Rancidity in food In which the Food starts  decomposing  .

Q: A 42.2 g sample of ground water is found to have a lead concentration of 17.77 ppm. Calculate the…

A: Mass of solute present in 106 or 1 million mass of solution is known as ppm concentration.

Q: 500 400 300 200 100 20 40 Temperature °C 60 80 100 The area marked above the red line can best be…

A: There are different type of Solutions , which have different properties and conditions -  Saturated…

Q: What is meant by the phrase "like dissolves like"? O Solutes will dissolve in solvents of similar…

A: Solute It is  substance which has to be dissolved Solvent  It is a substance in which the solute is…

Q: State a reason of the following statement: (i) Soap do not work in hard water. (ii) The use of the…

A: (i) Soaps are the sodium and potassium salts of higher fatty acids. When soap is dissolved in hard…

Q: A certain liquid X has a normal boiling point of 118.50 °C and a boiling point elevation constant K,…

A:

Q: Catriona prepared a solution by dissolving 5.02g of KNO, in 95.0g of water. (MM of KNO, = 101.11…

A: By using the formula of concentration of solution in ppm we can find concentration.

Q: A saturated solution is made by dissolving 44.4 g of a chemical in 200 mL of water. A second…

A: The nature of the solution whether unsaturated, saturated, supersaturated or hypersaturated can be…

Q: 38. A potassium chloride (KCI) solution containing 30g/100g of water at 10°C is warmed to 40°C. What…

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A: Sugar dissolves in water is a physical change because in this change no new substance is formed and…

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A: How a detergent acts on oil molecules in water.

Q: A city is considering different water purification methods for supply. Which fact would help inform…

A: Answer - The correct option is (d) Reverse osmosis system are most expensive because of the use of…

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A: According to the Henry's law, the solubility of a substance is directly proportional to its pressure…

Q: Calculate the new boiling point of a solution containing 5.27 g of sucrose (C12H22011) and 45g of…

A: Molality is defined as number of moles of solute dissolved per kg of solvent.

Q: The following diagram represents four possible models of how surfactants behave on non-polar…

A: D is the correct model to describe the detergent act on oil molecules in water.

Q: Identify the compound that can form hydrogen bonding? O A. CC14 O B. NO2 OC. CH4 O D. HF QUESTION 38…

A: H-bond is the bond formed between the opposite poles of polar molecules which contain hydrogen…

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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: What term issued to describe a substance that, when exposed to air, absorbs so much water from the…

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Q: These modify the interfacial properties of substances. A. Surfactants B. Aerosols C. Nanotechnology…

A: Answer is A) Surfactants

Q: Why do industries use so much of the world’s available fresh water? (b) Choose a specific industry…

A: Water is used in industries for variety of purposes such as ultrapure water is used in semiconductor…

Q: Include the following terms: • solute, intracellular fluid, extracellular fluid, simple diffusion,…

A:

Q: h glass material is 0.1 N HCl solution prepared? A-) beaker B-)balloon jojo C-)erlenmeyer D-)measu

A: In chemical laboratories, all the chemicals, solutions, reactants are prepared and mixed in a…

Q: How many grams of table sugar (H12C22O11) is needed to produce 1.5 M of 1 L sugar solution?

A: Given the concentration of sugar solution =1.5 M volume of solution =1 L we are asked to calculate…

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

A:

Q: For questions #23 - #27 A solution is made by dissolving 6.26g NaOH in 25.2g water. 19. What is the…

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A: Water is used as coolants in industries and power plants and as a result thermal pollution is…

Q: A dry gas occupies 300 mL at 25 °C and 760 mmHg. If this substance were collected over water at 23°C…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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

A:

Q: State a reason of the following statements: (i) Soap do not work in hard water. (ii) The use of the…

A: The interaction of surfaces of one system with another is studied under surface chemistry. The…

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A:

Q: 53. This statement is CORRECT regarding figure 2A. * a. There is no net movement of the solvent in…

A: Osmosis is movement of a solvent through a semipermeable membrane.

Q: A solution is formed by dissolving 40 g of KClO3 in to 100 g of water at 70 °C. Explain how much of…

A: Given,  A solution is formed by dissolving 40 g of KClO3 in to 100 g of water at 70 °C.  solubility…

Q: Explain why air is classified as a solution and oxygen is classified as a pure substance.

A: Yes air is not a pure substance but it is a solution because A pure substance is one which has same…

Q: 4. How many grams of “lead are contained in 6.0 X 10' g of blood if the lead content of that sample…

A: Give, the content of lead in blood sample = 0.62 ppm We can write it as , the content of lead in…