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QUESTION 5 A little amount of sugar is added to a cup of water. The sugar...
QUESTION 8 A little amount of sugar is added to a cup of water. The sugar completely dissolved in the water. The water is the: Solvent Solution Solute
QUESTION 19 The particles that can pass through a semipermeable membrane are the ones found in: Solutions Suspensions Colloids
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
QUESTION 14 A solution with a very small amount of solute dissolved in 1.0 liter of water considered as a: Diluted solution Concentrated solution. Supersaturated solution. QUESTION 15 Nonpolar substances dissolve in: Nonpolar solvents Polar solvents
QUESTION 9 14 pe that only depend on the Colligative properties refer to properties of of but not on their (For this sentence enter: increase & decrease) When a nonvolatile solute is dissolved in water it wil the the freezing point of this solution with respect to pure water. boiling point and Osmosis is a phenomenon that can be observed when two aqueous solutions of different are in contact membrane. If only water molecules can pass through this membrane, but...
Why? How do water morcules move in and out of cells counts for over 70% of the human body. If water levels are not regulated and maintained in an is the consequences can be disastrous. Cells and tissues may well, blood cells burst, or the brain muy expand so much it pushes on the skull, leading to brain damage and death. So what exactly is the process that allows organisms to regulate and maintain their water content? Model 1 -...
Question 9 (1 point) What term is used by chemists to quantitatively describe a solution in which a relatively small amount of solute is dissolved? dilute saturated supersaturated concentrated unsaturated Question 10 (1 point) A solution of sucrose in water is allowed to sit in the sunlight without a cover. After 5 days, which of the following statements is true? the molarity of the solution has increased the mass percent of the solution has decreased the number of moles of...
please give me the right answer. thanks In many biological solutions, water is the solvent, meaning that solute molecules are dissolved in it (think of salt or sugar water). If a solute does not move across a semipermeable membrane, it is асr known an osmotically active solute. For the following examples, assume that the solute is osmotically active. In osmosis, water molecules move across the cellular membrane down the gradient (from an area of low solute/high water concentration to an...
Exercise 1 - Question 5 Match each term related to fluid volume regulation with its corresponding definition listed below! (A) The free movement of particles (solute) across a permeable membrane from an area of higher concentration to an area of lower concentration (B) The movement of fluid through a cell or blood vessel membrane because of hydrostatic pressure differences on both sides of the membrane (C) The movement of water only through a selectively permeable (semipermeable) membrane (D) The pressing...
7. At 60oC, NaNO3 has a solubility of 110 grams NaNO3 per 100 grams of water. How many grams of NaNO3 are needed to prepare a saturated solution using 50. grams of water? 9. To what volume would you dilute 250.0 mL of a 0.4500 M NaOH solution to obtain a 0.2700 M solution? 10. How many grams of NaNO3 are needed to prepare a 95.00 mL solution that is 9.5% (m/v)? 11. A 140.0 mL sample of a 0.85...