Q79: At 20°C, the ion-product constant of water, Kw, is mc018-1.jpg. What is the pH of pure water at 20°C? 

Q80: 1. Where did ethics originate? How are ethics used in public speaking?

2. What is plagiarism? What is the difference between global and patchwork plagiarism?

3. What is the difference between paraphrasing and directly quoting a source?

4. What free speech rights are granted to a speaker?

5. Why is raising social awareness an ethical concern when preparing a speech?

6. What are some ways to use language ethically in presentations?

7. How is listening used in the public speaking setting? What are some guidelines for being an ethical listener?

10. Explain what 322 +14-23 tells you for each of the following: (a) repeated-subtraction division (b) sharing-equally division (c) missing-factor division