Part D: Volatiles. A 1.232 gram sample of copper complex weighed 0.783 g after heating. What is the percent of volatile material in this sample? If the sample contains 17.4% ammonia, what is the percent water in the sample?

Q: If the volume of the mixture before distillation was 70ml and the percent of recovery was 66%, what…

A: Given that, Volume of mixture before distillation= 70 ml % of recovery =66%

Q: Explain how a geologist might use the flame test to identify a cation from different mineral…

A: A question based on qualitative analysis, which is to be accomplished.

Q: Will the molecular weight of the sample be more or less than the correct molecular weight if the…

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Q: Toxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How…

A: Given Volume = 3.00 × 108 L  molarity = 4.00×10-2 mM

Q: Technician A says that detergents keep oil from forming wax deposits under cold temperatures.…

A: Detergents are amphiphilic substances with polar and non polar tails. Detergents are very useful in…

Q: what are the current distillation technologies used for ethanol and water in the industry?

A: Microbubble Distillation for Ethanol-Water Separation Distillation technique iso ne of the oldest…

Q: More than 40% of the world's population has limited access to clean water. One proposed method for…

A: Separation technique is used for the purification and separation of substance. Some of the…

Q: Which statement is true?   Statement 1: Melting point and boiling point can be used to identify…

A: Melting point The temperature at which Solid is converted to Liquid is called as melting point .…

Q: 9. When not in use, NaNO2 was stored in a capped jar and placed in a desiccator. Why is it stored in…

A: NaNO2 (Sodium Nitrite) A common use for desiccators is to protect chemicals which are hygroscopic or…

Q: 4 mL of a ground water sample from Gallup, NM was found to contain 50 micrograms of U4+ ion. Express…

A: Parts per million (ppm) :-  The number of parts by weight of solute present in million (106) parts…

Q: Hydrochloric acid (HCl) was added to potassium iodate crystals (KIO₃) which had previously been…

A: A chemical reaction that involves a transfer of electrons between two species is known as an…

Q: Given the information: One liter of hot water will dissolve 83 g of compound Z. One liter of cold…

A: One liter of cold water will dissolve = 12 g of compound Z. Or we can say that  12 g of compound Z…

Q: Plaster of Paris should be stored in moisture-proof container. Explain why?

A: Solids can be classified in two types; crystalline solid and amorphous solid. The crystalline solids…

Q: Zn       +          2  HCl     ------> ZnCl2 + H2 2) When HCl(aq) is poured over the zinc metal,…

A: Given, When HCl(aq) is poured over the zinc metal, the liquid begins to fizz with small bubbles.

Q: What is the mass concentration of a liter of milk? A liter of milk weighs 1060 g and includes 1.6…

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Q: Krusty Krabs Breath Mints Mr. Krabs created a secret ingredient for a breath mint that he thinks…

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Q: 10. A student analyzed a limestone sample but forgot to dry it. He found 31.20% CaO, whereas the…

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Q: Describe the fractional distillation curve/graph

A: To describe the fractional distillation curve / graph.

Q: 3. What are volatile chemicals? A. Chemicals that exist as gases at ambient conditions (room…

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Q: Filtration of samples A, B, and C show no residue left. After letting them dry in different beakers,…

A: Filtration is a technique to separate insoluble part from the soluble part in a solution.  No…

Q: If a small amount of impurity is present in a sample, what will be its effect on the melting point…

A: Types of impurities that can be present in the sample: Miscible impurity: Such impurity is soluble…

Q: A 809 mL NaCl solution is diluted to a volume of 1.40 L and a concentration of 5.00 M . What was the…

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Q: An industrial waste lagoon is contaminated with cadmium. The concentration of Cd2+ in the lagoon is…

A: The concentration of Cd2+ in the lagoon is 1.2 mg/L. Convert this unit to μmol/L Molar mass of…

Q: A sample of liquid isopropyl alcohol is placed in a sealed container.  Some of the volatile…

A: Evaporation is the process in which liquid compound is converted to gas phase.

Q: The dissolved coffee in hot water can be separated by which technique? a. using a magnet b.…

A: There are methods used to seperate two mixtures based on their properties. These methods depends on…

Q: Can paper chromatographt be used to separate and identify very volatile substances? Explain.

A: Paper chromatography is a technique used to separate components based on the differential migration…

Q: A monolayer containing 3.21 × 10 –6 g of oleic acid has an area of 20.0 cm 2. The density of oleic…

A: Given, mass of oleic acid = 3.21 × 10 –6 g            density of oleic acid = 0.895 g/mL…

Q: Explain how drying, salting, fermentation, canning, and freezing preserve food.

A: how drying, salting, fermentation, canning, and freezing preserve food.

Q: 1. Explain how distillation works in separating simple mixtures. 2. Differentiate simple…

A: By distillation technique,  mixture of volatile substances having different boiling points can be…

Q: Jeepers! Someone snuck into the Movie Madness studio and stole the reels for the new film! The CSI…

A: Using composition of all elements present, we calculate empirical formula and then molecular formula…

Q: A student dissolves 111 g of compound Q in one liter of hot water. All of compound Q dissolves.…

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Q: Your answers are saved automatically. Remaining Time: 1 hour, 58 minutes, 27 seconds. * Question…

A: □Tf = 5.5-4.3 =1.20 °c □Tf = i ×Kf ×m Molality(m) = moles/mass of solvent  m = 2.5/MM×0.025

Q: A 500 mL of river water contains 0. 06 g of mercury. the concentration in ppm is: O 120 ppm O 0.12…

A: Since you have posted a question with multiple questions, we will solve first question for you. To…

Q: What two ionic compounds are dissolved in the filtrate after the suction filtration step What two…

A: The above reaction is an example of double displacement reaction and a well known procedure for…

Q: Which type of distillation is used for a mixture where a component is highly volatile? O Fractional…

A: Distillation is the process of separation of two-component in the mixture. The different…

Q: Which of the following factors can result in the broadening of the melting point of a sample? I.…

A: We will do option elimination, Lets check statement 3. Usually on additing impurities there is…

Q: 7. If a certain hydrogen peroxide solution is 20- volume hydrogen peroxide, it contains: 1. 3%…

A: Volume strength of hydrogen peroxide is defined as the volume of oxygen liberated from unit quantity…

Q: Determine the number of grams (to 3 decimal places) of solid KNO3 to make 1.0litres of 1000 ppm of…

A: Parts per million (ppm) is a concentration term like percent concentraton. The mass of solute in mg…

Q: 1. The following table gives information about three solids: nickel, wax and magnesium. attracted by…

A: Given Nickel is insoluble in ethanol and attracted by magnet. Wax is soluble in Ethanol and not…

Q: In the southern of USA, there is level of Nitrogen oxide was reported with concentration around…

A: Concentration is defined as the amount of substance per unit volume of solution. Unit of…

Q: More than 40% of the world's population has limited access to clean water. One proposed method for…

A: Reverse osmosis is a technique which is used to remove or separate the salt from the saltwater…

Q: 6. Explain the reason why a laboratory analyst should not return excess or unused chemicals back in…

A: 6) Answer - According to the question - The reason why a laboratory analyst should not return excess…

Q: David decides that it is better to create a blend containing 50% NaCI, 33% KCI and 17% CaCl2, than…

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Q: Which of the next is not a property for a recrystallizing solvent? Select one: O a. Volatile O b.…

A: The criteria used to choose an appropriate recrystallization solvent includes

Q: When bromoform (d=2.89 g/ml) and water ( d=1 g/ml) are mixed, two layers form. Is the bottom layer…

A: Given: Density of bromoform = 2.89 g/mL. And the density of water = 1 g/mL.

Q: 2. A liquid at 1000°C and an overall composition of 55% zinc (45% copper) is cooled to 600°C. a.…

A: GIVEN: A liquid at 1000 C and an overall composition of 55% zinc (45% copper) is cooled to 600…

Q: Lab. work Nacl is a chemical compound of a molecular mass =58.4 1- prepare 10 ml of one molar…

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Q: 12. table sugar 13. grain alcohol 14.rubbing alcohol Isopropyl alcohol 15.nail polish C12H22011…

A: The solution of the question is given below:

Q: Water solution of an unknown compound is basic. When a small piece of solid is heated in a dry test…

A: Na2B4O7. 10H2O (Borax) compound is basic in nature. It is highly basic in nature because it produce…

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.