24 Jun a: Explain the process of fading of a carpet upon repeated exposure to sunlight? Is the reaction chemical or a physical change? 1b. Is agin
a: Explain the process of fading of a carpet upon repeated exposure to sunlight? Is the reaction chemical or a physical change? 1b. Is aging primarily an example of a physical or chemical change? Explain. 1c) Which are closer together: the two nuclei within molecular fluorine (F2) or the two nuclei within potassium fluoride (KF)? 2a: Which has greater potential energy and why: an electron in a 3s orbital or an electron in a 3p orbital? 2b: Which experiences a greater effective nuclear charge, an electron in the outermost occupied shell of argon or one in the outermost occupied shell of potassium? So which is bigger and why? 2c: The molecular geometry of water is tetrahedral, but its shape is bent. Why? 3a) Is this equation balanced? Explain your answer. 4C6H7N5O16(s) + 19O2(g) 24CO2(g) + 20NO2(g) + 14H2O(g) 3b) For the reaction below, use the bond energies to calculate the net energy of reaction and state if reaction is exothermic or endothermic reaction with reason(s). 2N N + 2O = O (N N is +946 Kj/mole; 2N = O + 2N = O O = O is +498 Kj/mole; N = O is – 631 Kj/mole). 4b: When the pH of a solution is 2, the concentration of hydronium ions is 1 10-2 M = 0.01 M. Assume that the volume of this initial solution is 500 ml and that the solution is not buffered. What is the pH after an additional 200 ml of pure water is added to the initial solution? Is this solution acidic or basic? (Note you will need a calculator with a logarithm function). 2
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.