1.What is water? (2)2.Define hardness of water. Is the sea water hard? Explain (4)3. What are the salts responsible for carbonate and non-carbonate hardness of water?(2)4.Name a chemical that can be used in a laboratory to test for the presence of water (2)5.What colour change is noticed in this test for water?(2)6.Some elements form compounds that dissolve in water to cause hardness. Name an element whose compounds dissolve in water to cause hardness(2)7.How can hardness be removed from water. Motivate your answer with a diagram (5)8.An analysis of drinking water showed that it contains 0.02 grams of chlorite per 700mL of water. Does this exceed the EPA drinking water standard?(5) 9.How did this chemical contaminant enter the drinking water? (6)

1.What is water? (2)2.Define hardness of water. Is the sea water hard? Explain (4)3. What are the salts responsible for carbonate and non-carbonate hardness of water?(2)4.Name a chemical that can be used in a laboratory to test for the presence of water (2)5.What colour change is noticed in this test for water?(2)6.Some elements form compounds that dissolve in water to cause hardness. Name an element whose compounds dissolve in water to cause hardness(2)7.How can hardness be removed from water. Motivate your answer with a diagram (5)8.An analysis of drinking water showed that it contains 0.02 grams of chlorite per 700mL of water. Does this exceed the EPA drinking water standard?(5) 9.How did this chemical contaminant enter the drinking water? (6)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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13 ← CO Biblio Manuels-fren.... CH Draw the curved arrows showing a proton transfer reaction, and draw the products of that proton transfer. Do not include the Li+ counterion, and lone pairs are not required in the products. + H-O-H Edit Drawing CMCbx bbwb + C .../1 11:11 PM 2024-02-09 0 AIN
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Application 14. Given the function f(x) = 3x3 - 48x find the following: (Round to 1 decimal place) a) The x and y intercepts [K/U: ] b) The local maximums and minimums [A:. c) Find any points of inflections [A: I d) Graph the function [C 5
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W AutoSave On assignment - Compatibility Mode • Saved - O Search (Alt+Q) raghav grover RG File Home Insert Draw Design Layout References Mailings Review View Help P Comments A Share - A A Aa v A O Find Times New Roman v 12 Normal Body Text List Paragraph No Spacing C Replace Paste В I U v ab x, x A - Dictate Editor Reuse A Select v Files Undo Clipboard a Font Paragraph Styles Editing Voice Editor Reuse Files 6. Provide a mechanism for the following transformation: CN CO2H 1. NaOH 2. H30* Page 5 of 19 258 words English (United States) K Accessibility: Unavailable DFocus 100% ENG 9:12 AM O Type here to search 1°C Cloudy US 2022-04-20 近

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Stearic acid: Description of bromine (red-orange) color persistance
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AutoSave w Cinnamates DIR - Compatibility Mode OFF Home Insert Draw Design Layout References Mailings Review View Table Design Layout Tell me Share O Comments Times New... v 12 A A Аa v AaBbCcD AaBbCcDdE AaBb AаBbCcDdEe AaBbCcDdEe AaBbCcDdE E AaBbCcDdEe AaBbCcDdEe AaBbCcDdEe > Paste A • ev A No Spacing Title Subtle Emph... Normal Heading 1 Heading 2 Subtitle Emphasis Intense Emp.. Styles Pane B U v ab x, Dictate Sensitivity trans-cinnamic acid Work up your spectrum well, and fill in Table 1 below. Omit any impurities, solvents, or other elements that are not part of your compound. For the Figure, make a good drawing in ChemDraw (ACS-1996 settings), inserting the compound name in bold below the structure. Then using small, bold, lowercase letters to match the table, assign all of the 'H signals. Figure 1: Structure and 'H NMR assignments for trans-cinnamic acid. ОН Table 1: Experimental 'H NMR data for trans-cinnamic acid. Signal 8 (ppm) Mult. J-values (Hz) Int. a 11.3 1H b 1H 2H d 3H е…
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O Homework in Chem101 - due Su X My Questions | bartleby ( Periodic Table – Royal Society of how to take a screenshot on an + A learn.maricopa.edu/courses/1132256/modules/items/19018052 CHM151 17003 > Modules > Weeks 8 & 9 - Chapter 7 > Homework in Chem101 - due Sunday night CG 2020 FALL CRED Question 38 of Submit Account Home Complete the balanced neutralization equation for the reaction below: Announcements Dashboa |Modules HCIO:(aq) + NaOH(aq) – rd Concourse Syllabus Courses Grades O3+ D4+ Cisco Webex Groups 1 2 3 4 7 8 9. Tutoring/Learning Center Calendar Os Do Inbox (1) (g) (aq) History Na CI H. Help • Previous Next » Library 1:03 PM O Type here to search 10/18/2020 1L + 近