Help! A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.79 g/mL, 1.79 g/mL, 1.79 g/mL, 1.80 g/mL. If the actual value for thedensity of the sugar solution is 1.80 g/mL, which statement below best describes her results?O Her results are precise, but not accurate.O Her results are accurate, but not precise.O Her results are both precise and accurate.O Her results are neither precise nor accurate.O It isn't possible to determine with the information given.

Accurate measurement :- A measurement is said to be accurate if it is very close to the actual…

Answered: A student performs an experiment to…

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU6: Showtime: Reversible Reactions And Chemical Equilibrium

Section: Chapter Questions

Problem 10STP

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What is the difference between (a) mass and density? (b) an extensive and an intensive property? (c) a solvent and a solution?
1.87 A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. what information would you need to look up and how would you determine the percentage of ethanol in this solution?
Potassium sulfate has a solubility of 15 g/ 100 g water at 40C. A solution is prepared by adding 39.0 g of potassium sulfate to 225 g of water, carefully heating the solution, and cooling it to 40C. A homogeneous solution is obtained. Is this solution saturated, unsaturated, or supersaturated? The beaker is shaken, and precipitation occurs. How many grams of potassium sulfate would you expect to crystallize out?
Given the following solubility curves, answer the following questions: (a) In which of the two compounds can more solute be dissolved in the same amount of water when the temperature is decreased? (b) At what temperature is the solubility of both compounds the same? (c) Will an increase in temperature always increase solubility of a compound? Explain.
Consider the following solubility graph. (a) At point A, how many grams of the compound are dissolved in 100 g of water? Is the solution saturated, unsaturated, or supersaturated? (b) At point B, how many grams of the compound are dissolved in 100 g of water? Is the solution saturated, unsaturated, or supersaturated? (c) How would you prepare a saturated solution at 30C?
A solution made by dissolving sugar in water is homogeneous because the composition is the same everywhere. But if you could look with very high magnification, you would see locations with water particles and other locations with particles of sugar. How can we say that a sugar solution is homogenous?
You are assigned the task of separating a desired granular materialwith a density of 3.62 g/cm3 from an undesired granularmaterial that has a density of 2.04 g/cm3. You want to dothis by shaking the mixture in a liquid in which the heaviermaterial will fall to the bottom and the lighter material willfloat. A solid will float on any liquid that is more dense. Usingan Internet-based source or a handbook of chemistry, findthe densities of the following substances: carbon tetrachloride,hexane, benzene, and diiodomethane. Which of theseliquids will serve your purpose, assuming no chemical interactiontakes place between the liquid and the solids?
A small bottle of Coke contains 8 fluid ounces, or 237 mL, of soda. The nutrition label states that it contains 26 g of sugars. Assume that all of the sugar is sucrose, C12H22011. Assume that the density of the solution is 1 g/mL so that the solution also weighs 237 g. What is the mass percent of sugar in this solution? 24.6% 3.46% O 11.0% 9.11%
A solution is made using 450.0 mL of isopropanol (density 0.7860 g/mL) and 845.5 mL of water (density 1.000 g/mL). What is the mass percent of the isopropanol?
If I add 646.84 g of magnesium chloride to 1,727.72 grams of hexane, what will the resulting boiling point of the new solution be? The boiling point of hexane is 68 ⁰C and Kb(C6H14) = 2.90 ⁰C/m. Don't round until the end and use two digits after the decimal
A dilute aqueous solution has a density near 1.00 g/mL. Suppose the solution contains 1ppm of solute; express the concentration of solute in g/L, µg/L, µg/mL, and mg/L.
- 1 A certain liquid X has a normal freezing point of -3.20 °C and a freezing point depression constant K,=5.59 °C·kg•mol A solution is prepared by dissolving some urea (CH¸N,O) in 650. g of X. This solution freezes at -8.1 °C. Calculate the mass of CH,N,O that was dissolved. Round your answer to 2 significant digits.

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