The ingredients contained in grape Kool-Aid can be approximated as: water (H2O, density = 1.000 g/mL), sugar (sucrose, solid at room temperature, C12H22011), citric acid (solid at room temperature, C6H&O7), and grape flavouring (methyl anthranilate, liquid at room temperature, C3H9NO2, density = 1.168 g/mL). (The blue and red dyes used to produce the purple colour are present in such small quantities that they can be ignored.) A sample of grape Kool-aid having a final total volume of 500 mL can be prepared from: 485 mL of water, 32.0 g of sugar, 5.00 g of citric acid, and 3.50 g or grape flavouring. Calculate the molarity and molality of grape flavouring in this mixture (assume that only water is the solvent).

The ingredients contained in grape Kool-Aid can be approximated as: water (H2O, density = 1.000 g/mL), sugar (sucrose, solid at room temperature, C12H22011), citric acid (solid at room temperature, C6H&O7), and grape flavouring (methyl anthranilate, liquid at room temperature, C3H9NO2, density = 1.168 g/mL). (The blue and red dyes used to produce the purple colour are present in such small quantities that they can be ignored.) A sample of grape Kool-aid having a final total volume of 500 mL can be prepared from: 485 mL of water, 32.0 g of sugar, 5.00 g of citric acid, and 3.50 g or grape flavouring. Calculate the molarity and molality of grape flavouring in this mixture (assume that only water is the solvent).

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter2: Chemical Compounds

Section: Chapter Questions

Problem 143QRT: The present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry...

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3.83 For the reaction of nitrogen, N2, and hydrogen, H2, to form ammonia, NH3, a student is attempting to draw a particulate diagram, as shown below. Did the student draw a correct representation of the reaction? If not, what was the error the student made?
4-102 Aspartame, an artificial sweetener used as a sugar substitute in some foods and beverages, has the molecular formula C14H18N2O5. (a) How many mg of aspartame are present in 3.72 × 1026 molecules of aspartame? (b) Imagine you obtain 25.0 mL of aspartame, which is known to have a density of 1.35 g/mL. How many molecules of aspartame are present in this volume? (c) How many hydrogen atoms are present in 1.00 mg of aspartame? (d) Complete the skeletal structure of aspartame, where all the bonded atoms are shown but double bonds, triple bonds, and/or lone pairs are missing. (e) Identify the various types of geometries present in each central atom of aspartame using VSEPR theory. (f) Determine the various relative bond angles associated with each central atom of aspartame using VSEPR theory. (g) What is the most polar bond in aspartame? (h) Would you predict aspartame to be polar or nonpolar? (i) Is aspartame expected to possess resonance? Explain why or why not. (j) Consider the combustion of aspartame, which results in formation of NO2(g) as well as other expected products. Write a balanced chemical equation for this reaction. (k) Calculate the weight of C02(g) that can be prepared from 1.62 g of aspartame mixed with 2.11 g of oxygen gas.
The present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry textbook estimates that if 1.00 × 108 tons Mg were taken out of the sea each year, it would take one million years for the Mg concentration to drop to 0.12%. Do sufficient calculations to either verify or refute this statement. Assume that Earth is a sphere with a diameter of 8000 mi, 67% of which is covered by oceans to a depth of 1 mi, and that no Mg is washed back into the oceans at any time.
Aspirin can be prepared from salicylic acid (C7H6O3 ), which has a molar mass of 138.12 g/mol, and acetic anhydride (C4 H6 O3), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL. C;H,O3 + C4H6O3 → C9HgO4 + C2H3O2 What is the theoretical yield, in grams, of aspirin (C9H3O4), which has a molar mass of 180.15 g/mol, possible when reacting 3.06 g of salicylic acid with 3.71 mL of acetic anhydride? Type answer:
Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and acetic anhydride (C4H6O3) which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL. C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 What is the yield, in grams, of aspirin (C9H8O4), which has a molar mass of 180.15 g/mol, possible when reacting 2.10 g of salicylic acid with 1.01 mL of acetic anhydride?
Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and acetic anhydride (C4H6O3), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL. C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 What is the theoretical yield, in grams, of aspirin (C9H8O4), which has a molar mass of 180.15 g/mol, possible when reacting 3.05 g of salicylic acid with 3.66 mL of acetic anhydride?
Aspirin can be prepared from salicylic acid (C,H,O3), which has a molar mass of 138.12 g/mol, and acetic anhydride (C,H,O3), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/ml. C,HO3+ C,H6 O3 - C,HsO, + C,H3O2 What is the yield, in grams, of aspirin (C,H,04), which has a molar mass of 180.15 g/mol, possible when reacting 2.25 g of salicylic acid with 1.20 ml of acetic anhydride?
Aspirin can be prepared from salicylic acid ( C7H6O3 ), which has a molar mass of 138.12 g/mol, and acetic anhydride (C4H,O3 ), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL. C7H6O3 + C4H, O3 → C9H3 O4 + C2H4O2 What is the theoretical yield, in grams, of aspirin ( C9H3O4), which has a molar mass of 180.15 g/mol, possible when reacting 3.25 g of salicylic acid with 3.56 mL of acetic anhydride?
Mercury and bromine will react with each other to produce mercury (II) bromide:What mass of HgBr2(s) can be produced from the reaction of 5.00 mL Hg(l) (density = 13.6 g/mL) and 5.00 mL Br2(l) (density = 3.10 g/mL)? ((l) stands for liquid)
Emissions from the burning of fossil fuels are often reported as gigatons ( Gt ) of carbon. In a calendar year, China emitted 2.9 Gt of carbon while the Unites States released 1.5 Gt of carbon. To what mass in gigatons of CO2CO2 do these amounts of carbon correspond?
Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and acetic anhydride ( C4H6O3), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL. C7H6O3 + C4H6O3 C9H8O4 + C2H4O2 What is the theoretical yield, in grams, of aspirin (C9H8O4), which has a molar mass of 180.15 g/mol, possible when reacting 3.13 g of salicylic acid with 3.54 mL of acetic anhydride? Type answer:
The chemical equation for the complete combustion of propane, C₂H,(g), is C3Hg(g) + 5 0₂(g) → 3 CO₂(g) + 4H₂O(g) (a) What mass of oxygen is required to burn 8.8 kg of propane? [ans: 32 kg] (b) Predict what mass of carbon dioxide will be produced. [ans: 26 kg]

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