(a)
Interpretation:
Upper layer of mixture on addition of heptane in water is to be determined.
Concept introduction:
Density of the substance determines whether the substance sinks or floats in a liquid. Substance with less density always floats on a high-density liquid.
Density is defined as ratio of mass to the volume.
(b)
Interpretation:
Upper layer of mixture on addition of olive oil in water is to be determined.
Concept introduction:
Density of the substance determines whether the substance sinks or floats in a liquid. Substance with less density always floats on a high-density liquid.
Density is defined as ratio of mass to the volume.
(c)
Interpretation:
Upper layer of mixture on addition of chloroform in water is to be determined.
Concept introduction:
Density of the substance determines whether the substance sinks or floats in a liquid. Substance with less density always floats on a high-density liquid.
Density is defined as ratio of mass to the volume.
(d)
Interpretation:
Upper layer of mixture on addition of carbon tetrachloride in water is to be determined.
Concept introduction:
Density of the substance determines whether the substance sinks or floats in a liquid. Substance with less density always floats on a high-density liquid.
Density is defined as ratio of mass to the volume.
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
General, Organic, and Biological Chemistry - 4th edition
- Beakers (a), (b), and (c) are representations of tiny sections (not to scale) of mixtures made from pure benzene and pure water. Select which beaker gives proper representation of the result when the two pure substances are mixed.arrow_forwardWhat is the difference between (a) mass and density? (b) an extensive and an intensive property? (c) a solvent and a solution?arrow_forwardIn a flask, you heat a mixture of 735.4 g of sodium nitrate and 700.0 grams of water until all of the sodium nitrate has just been dissolved. At what temperature does this occur? When you examine the solution later, the temperature is 25°C and you notice a white powder in the beaker. What has happened? What is the mas of the white powder? Solubility vs. Temperature 140 KI 130 120 NaNO, gases 110 sólids 100 KNO, 90 80 HCI NH,CI 70 60 NH3 KCI 50 40 NacT 30 KCIO, 20 10 SO2 0 10 20 30 40 50 60 70 80 90 100 Temperature °c Solubility (grams of solute/100 g H2O)arrow_forward
- Cinnamaldehyde (132.16 g/mol) is used as a flavoring agent. What mass of cinnamaldehyde must be added to 325 g of ethanol to give a solution whose boiling point is 81.47°C? (For ethanol, Kb = 1.22°C/m; boiling point of pure ethanol = 78.37°C)arrow_forwardA solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that there are 15 mg of benzene in 1.0 g of this solution O 100 g of the solution contains 15 g of benzene O 1.0 g of the solution contains 15 × 10-6 g of benzene O 1.0 L of the solution contains 15 g of benzene O the solution is 15% by mass of benzenearrow_forwardAround 10 grams of calcium carbonate (CaCO3) is added to around 100 mL of water. Which of the following is a true statement regarding this mixture? Group of answer choices It is a homogeneous mixture It is a strong electrolyte It is an acidic solution It is a non-electrolyte solution It will form hydrogen sulfide gas if heatedarrow_forward
- A mixture of ethylene glycol (C2H6O2) and water is used as an antifreeze in cars. However, it is not just to keep the radiator from freezing but also to keep it from boiling over when hot. If a mixture is made with 500.0 mL of ethylene glycol (density = 1.11g/mL) and 500.0 mL of water (density = 1.00g/mL) what will the boiling point be of the mixture? Assume that water is the solvent with a boiling point constant of kb =0.512arrow_forwardWhat is the freezing point of a ethanol solution if that same solution boils at 79.5 ℃? The normal boiling point and freezing point of pure ethanol (C2H5OH) are 78.29 ℃ and -114.2 ℃, respectively. For ethanol, Kb = 1.23 ℃/m and Kf = 1.99 ℃/m.Please enter your response in standard notation to one decimal place.arrow_forward1. (answer the questions in the tan boxes in the tables below each question) A student conducted an investigation to determine the effect of water temperature on the amount of sugar that dissolves in a beaker of water. Identify components for trial 1 of this investigation. Beaker Number 1 2 3 4 Amount of Water (mL) 100 100 100 100 Amount of Water (mL) Trial 1 Temperature of Temperature of Amount of Sugar Sugar (°C) Water (°C) Dissolved (g) 20 20 20 20 Temperature of Sugar 5 10 15 20 185 189 194 204 Temperature of Water Terms Variable Constant Amount of Sugar Dissolvedarrow_forward
- You are working in an aseptic unit making TPN bags. One of your adult patients requires 20mmol of sodium ions added their bag. You have a stock solution of 5% sodium chloride. Relative molecular mass Na = 23.0, Relative molecular mass Cl = 35.5 How many mls of this stock solution are required? Give your answer to one decimal place units – mlarrow_forwardThe chemical analysis of a water indicates the presence of cations in the following concentrations: Na+ 53 mg/L Mg2+36 mg/L K+ 72 mg/L Fe2+ 98 mg/L Mn2+15 mg/L A local softening company advertises that its softening unit has a capacity of 1000 meq. If water is used at the rate of 15 m³ per day, how frequently (i.e. how many times) will the unit have to be regenerated to provide the householder with soft water? (Na = 23, Mg = 24.4, K = 39, Fe = 55.85, Mn = 54.94 gms/mole) Answer: 105 Checkarrow_forwardA solution is made by dissolving 6.60 grams of MgCl2 in 380.0 mL of water. What is the freezing point of this solution (in °C)? Express you answer to 3 significant digits. Density of water= 1.00 g/mL Kf of water= 1.86 C/marrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning