Concept explainers
(a)
Interpretation:
If
Concept Introduction:
Buoyancy:
It explains the floating nature of a substance in a fluid based on the densities of the substance and the fluid in which it is placed.
If a substance with low density is placed in a fluid of more density, then the substance floats in that fluid.
If a substance with high density is placed in a fluid of low density, then the substance sinks in that fluid.
(b)
Interpretation:
If
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
If the test tube that contains bromobenzene, water and benzene is thoroughly shaken, and allowed to stand for five minutes, how will be the appearance of the tube has to be given.
Concept Introduction:
Refer to part (a).
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Chapter 1 Solutions
OWLV2 FOR MOORE/STANITSKI'S CHEMISTRY:
- Table salt from the beaker on the left in the photograph is added to water, forming the solution on the right of the photo. If you want to separate the mixture, would the distillation apparatus in figure 2-16 or the filtration apparatus in figure 2-17 be the better choice? Explain.arrow_forward(a) The sodium ion did not take part in this chemical reaction(Diluted H2SO4(aq) versus NaOH(aq)). What do we call such an ion?(b) Draw a simple diagram which shows how the sodium ion mixes with water in solution.What do we call this physical process?arrow_forwardAre each of the following things good or bad in a distillation? (a) The distillation stops at one point, and the temperature drops. (b) The material in the distilling flask boils violently and some sloshes up and into the condenser (c) You forget to run water through the condenser. (d) Distillate drops out of the condenser at the rate of about one drop per second.arrow_forward
- Suppose you are performing an experiment in which you are insructed to mix 10 g of a unknown solid 50 mL of unknown liquid. Upon mixing the two substances you find that thhe solid disappears. If you are to presume this change was merely physical in nature. How would you go about seperating the two components to recover as much of starting materials as possible?arrow_forwardArchimedes, a famous Greek scientist, was given a problem by King Hieron II of Syracuse (Sicily). The king suspected that his crown, which was supposed to be made of pure gold, contained some silver alloy, and he asked Archimedes to prove or disprove his suspicion. (It turned out that the crown did not contain silver.) How would you experimentally determined whether or not the crown was pure gold? (Hint: The method came to Archimedes when getting into a full bathtub. See the footnote in Experiment 22 for Archimedes’ solution.)arrow_forwardSuppose 25.4 grams of NaCl was added to 400 mL of water. The resulting solution was again diluted with water 1:100 with water. What is the final concentration of the NaCl in μM? The molecular weight of NaCl is 58.44.arrow_forward
- Give an example of a mixture in which solute is solid and solvent is liquid.arrow_forwardYou are given a hammer a battery, a bulb, wires and switch(a) How could you use them to distinguish between samples of metals and non metals?(b) Assess the usefulness of these tests to distinguish between metals and non-metalsarrow_forward35. An effervescent tablet has the follow- ing formula: Acetaminophen Calcium Carbonate 325 mg 280 mg 900 mg Citric Acid Potassium Bicarbonate 300 mg Sodium Bicarbonate 465 mg (a) Calculate the total weight, in grams, of the ingredients in each tablet. (b) How many tablets could be made with a supply of 5 kg of acetamin- ophen? hlearrow_forward
- 5 Water is evaporated from the magnesium chloride solution. The resulting solid is melted at 700°C and decomposed by passing electric current through it. (a) What is the name of the physical change that occurs first in the magnesium chloride? (b) Write the balanced chemical equation for this step. (c) Identify the type of chemical reaction.arrow_forwardPipet (1.0x10^1) mL of a sample solution into a 250.00 mL volumetric flask and dilute to the mark with distilled water. Then, pipet 2 mL of this diluted solution into a 50.00 mL volumetric flask and dilute to the mark with distilled water. What is the dilution factor of the final solution? (Note: keep one decimal in your answer.)arrow_forwardA student measures that the mass of a sugar solution is 5.70 g and the volume of the solution is 5.0 mL. (a) Calculate the density of the solution. (b) Calculate the concentration (mass/mass %) of the solutionarrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning
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