I need help on question 7? The mass of NaCI is 12 grams Mass of empty 100 mL beakerMass of beaker plus distilled waterMass of beaker plus solution of salt and waterMass of empty pycnometerMass of pycnometer plus distilled waterTemperature of distilled waterDensity of distilled waterMass of pycnometer plus solution of salt and waterApproximate boiling point of distilled waterApproximate boiling point of solution of salt and water47.231 g103.471 g115.471 g20.776 g46.332 g24.52 °C0.997296 g/ml49.530 g98.62°C104.56 °C 4) Find the molarity of NaCl in solutionUse Equation editor here to show all your work! You can copy and paste these when you need more linesmolarityPut your answer here with units!5) Consider the solution to consist of three distinct particles: water molecules, sodium ions andchloride ions. Find mole fraction of water in the solutionUse Equation editor here to show all your work! You can copy and paste these when you need more linesXwaterPut your answer here with units!6) Difference in measured boiling points of water and solution (based on direct observations)Use Equation editor here to show all your work! You can copy and paste these when you need more linesObserved difference in boiling pointsPut your answer here with units!7) Expected AT from calculation based on the concentration (you may assume the van't Hoff factoris based on the chemical formula).Use Equation editor here to show all your work! You can copy and paste these when you need more linesExpected difference in boiling pointsPut your answer here with units!

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7) Expected AT from calculation based on the concentration (you may assume the van't Hoff factor is based on the chemical formula). Use Equation editor here to show all your work! You can copy and paste these when you need more lines Expected difference in boiling points Put your answer here with units!

7) Expected AT from calculation based on the concentration (you may assume the van't Hoff factor is based on the chemical formula). Use Equation editor here to show all your work! You can copy and paste these when you need more lines Expected difference in boiling points Put your answer here with units!

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 98AP

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A student weighs out a 4.80-g sample of aluminum bromide, transfers it to a 100-mL volumetric flask, adds enough water to dissolve it, and then adds water to the 100-mL mark. What is the molarity of aluminum bromide in the resulting solution?
The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm means 1 part of solute for every 106 parts of solution. Mathematically, by mass: ppm=gsolutegsolution=mgsolutekgsolution In the case of very dilute aqueous solutions, a concentration of 1.0 ppm is equal to 1.0 g of solute per 1.0 mL, which equals 1.0 g solution. Parts per billion is defined in a similar fashion. Calculate the molarity of each of the following aqueous solutions. a. 5.0 ppb Hg in H2O b. 1.0 ppb CHCl3 in H2O c. 10.0 ppm As in H2O d. 0.10 ppm DDT (C14H9Cl5) in H2O
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Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a “burp”). Write the unbalanced chemical equation for this process.
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10 of 11 I Review | Constants Periodic Table s. Part B The equation for molarity, M, is M= 4 where V is volume and n is the number of moles of solute. ple A certain solution has a molarity of M = 5.85 mol/L and has a volume of V = 0.840 L. What is the value of n? Express your answer numerically in moles. • View Available Hint(s) e. ts n = mol 8:52 PM 42% 67°F 8/31/2021
I Review | Constants | Periodic Table Scores You may want to reference (Pages 298 - 306) Section 9.4 while completing this problem. Calculate the molarity of 70.0 g of HCl in 1.50 L of an HCl solution. eТеxt Express your answer with the appropriate units. Calculate the molarity of the following solutions. Document Sharing HẢ ? User Settings molarity = Value Units Course Tools > Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Enter your answer using units of chemical concentration. Part C Calculate the molarity of 20.0 g of NaOH in 330. mL of an NaOH solution. Express your answer with the appropriate units. ? molarity = Value Units P Pearson Copyright © 2021 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy. | Permissions | Contact Us | 12:00 AM P Type here to search 司 4/30/2021
Converting Concentrations to Different Units Introduction: Depending on how the concentration unit is defined, concentration can serve as a conversion between the amount of a solute and the amount of a solution or solvent. Concentrations can therefore be helpful in a number of stoichiometry issues. The original definition of the concentration unit is frequently preferred because it contains the conversion factor. Today, for chemists, it is suitable to make a solution in the lab using a specific concentration unit like molarity, and then convert the concentration to another unit. Today in the lab, I will prepare a sodium bicarbonate (baking soda) solution with a specific molarity. I will then translate the concentration into molality, mass percent, and mole fraction. Procedure The first step of this lab was to make sure I had everything I needed and that my surroundings were safe. I then looked at an empty beaker weighing paper and a balance. I first took a piece of weighing…
Converting Concentrations to Different Units Introduction: Depending on how the concentration unit is defined, concentration can serve as a conversion between the amount of a solute and the amount of a solution or solvent. Concentrations can therefore be helpful in a number of stoichiometry issues. The original definition of the concentration unit is frequently preferred because it contains the conversion factor. Today, for chemists, it is suitable to make a solution in the lab using a specific concentration unit like molarity, and then convert the concentration to another unit. Today in the lab, I will prepare a sodium bicarbonate (baking soda) solution with a specific molarity. I will then translate the concentration into molality, mass percent, and mole fraction. Procedure The first step of this lab was to make sure I had everything I needed and that my surroundings were safe. I then looked at an empty beaker weighing paper and a balance. I first took a piece of weighing…
3. Solubility data for copper(II) nitrate (Cu(NO3)2) and potassium nitrate (KNO3) at different temperatures is shown below. The values are for grams of compound per 10 milliliters of water. 0°C 20°C 40°C 60°C 80°C 100°C Cu(NO3)2 8.35 12.5 16.3 18.2 20.8 24.7 KNO3 1.3 3.2 6.4 11.0 16.9 24.6 Remember that the solubility of a compound refers the maximum amount of compound that can be dissolved in a particular solvent at a particular temperature. So for example, the maximum amount of copper(II) nitrate that can be dissolved in 10 mL of water at 80°C is 20.8 grams, and the maximum amount of potassium nitrate that can be dissolved in 10 mL of water at 80°C is 16.9 grams. a. How much potassium nitrate could you dissolve in 25 milliliters of water at 60°C based on the data in the table above? (Hint: use the solubility as a conversion factor in the calculation.) b. Could you dissolve 3.0 grams of potassium nitrate in 5 milliliters of water at 60°C? Indicate Yes or No. Explain your answer below.
Use the information and table to answer the question. A chemistry company is hired to produce sodium chloride (NaCI) using the following equation: Na (s) + HCI (aq) -> NaCl (aq) + H2 (g) The team of chemists recorded the following data. Mass of Mass of Total Mass of Na HCI Solution Products 14.25 g 9.50 g 23.75 g How does the balanced chemical equation and data follow the law of conservation of matter? Explain Paragraph I + v ... W prime video III lılı
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