Chemistry

 Identify a substance that can exist in all phases here on Earth. Describe different phase changes and what happens to this substance at the atomic level during these phase changes. 

If you were to reduce the volume of a gas in a container to 1/5 of its original volume by what factor does the pressure in the container increase (temperature is constant)?

You make $12.75 per hour and get time and a half for all hours over 40 in a week. They withhold  32% from your check for taxes and other things. If you work 53 hours in one week what will be your takehome pay?

The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between sodium metal and fluorine gas. Which properly represents the balanced chemical equation for this reaction?Na(s) F2(g) ? NaF2(s)Na(s) F(g) ? NaF(s) 7Na(s) F(g) ? Na7F(s) 2Na(s) F2(g) ? 2Na2F(s) 2Na(s) F2(g) ? 2NaF(s)Why is it important to understand this equation? What do you think could happen if this is incorrect?Provided APA format references

Dr. Walter White (Walt), a high school chemistry teacher and brilliant chemist, is diagnosed with lung cancer and urgently needs money for treatment. With the help of his former student, Jesse Pinkman, he starts producing highly pure crystal meth and gradually establishes his drug business. In the course of a drug deal gone badly, a rival gang leader, Tuco Salamanca, beats up Jesse and confiscates Walt’s meth. Walt decides to take revenge by blowing up Tuco’s headquarters and show him who the real boss is. He prepares a mixture of mercury (II) fulminate and silver fulminate in the mass ratio of 95.0 wt%:5.0 wt%. Crystals of this solid mixture has a similar appearance as crystal meth but detonates violently under the slightest shock. The reaction proceeds as below. Assuming that it takes 1 MJ (megajoule) of energy to blow up Tuco’s room, how much weight of explosive does Walt need to prepare? (10 marks) 2Hg(CNO)2 ~2CO2 + N2 + Hg + Hg(CN)2 4AgCNO ~2CO2 + N2 + 2Ag + 2AgCN Heat of reaction: -270 kJ/mol Heat of reaction: -500 kJ/mol 

Part 1: In this assignment you will first identify your selection. Give the history of the person, his/her research that won them the Nobel Peace Prize. Also, share the process as to how the winner is chosen. Finally, state why you selected this person in your assignment. You may use the “Online Librarian” to assist in your research. This assignment must meet the following criteria: Minimum word count: 500 words APA format Work Cited page Part 2: Provide Feedback to me if this assisted in giving you a better understanding of the History of Chemistry and what could be done differently (3 paragraph maximum).

Research a specific carboydrate that and its importance in biology. Discuss it’s structure, whether it is a monosaccharide, disaccharide, or polysachardide. If it is a monosaccharide, discuss its various isomers including where they are found and their approximate composition (i.e., percentages). If it is a disaccharide or polysaccharide discuss its imporatant linkages as well as where it is found in nature. Also describe which carbohydrate test could be used to detect its presence in solution. Your initial post must meet a minimum writing requirement (1 paragraph with at least 5 sentences).

• Use the periodic table posted • CHOOSE/ SOLVE WHEREVER ASKED Please solve the questions from 1 to 4 and then review the question 5, which is multiple choice questions. If there is any line, change to the correct answer immediately, please.

Explain why the height of a mercury column changes from day today.

1. Identify a substance that can exist in all phases here on Earth. Describe different phase changes and what happens to this substance at the atomic level during these phase changes.