15. I recently went to the dentist for a procedure that required me to have laughing gas( nitrous oxide, or N 2 O). I specified that I wanted EXACTLY 1.000 x 10 25 molecules of this gas delivered to me. If he was going to be my dentist, he had to prove to me he knew a little chemistry. How many grams would he have to deliver?
16. When answering the question of what I would do for a Klondike bar, I said I would jump into the Nile river with a crocodile while wearing 5.50 x 10 25 atoms of lead on my body. What would be the mass of this lead in kg?
17. I have some aliens in my basement who have developed a chemical weapon in an attempt to escape. I was able to survive the first attack and capture a sample of the dangerous gas. I analyzed it to find that it had a molar mass of 648.52 grams, and its empirical formula is C 5 H 11 N 2 O 2 P. What is its molecular formula?
18. In the image below, which reaction type is represented in equation 2?
19. If I ask you to write an equation representing a chemica reaction, you must first know
20. Oxidation-reduction reactions are also known as redox reactions. We learned about their unique characteristics in this lesson. Which of the following would be a FALSE statement given what we learned about redox reactions?
21. You have to be careful about pouring drano down your pipes since it is mainly hydrochloric acid--you can ' t do it if they are made of aluminum because it will dissolve them! You can ' t acid clean your aluminum auto parts for the same reasons: 2 Al + 6 HCl → 2 AlCl3 + 3H2. If you were able to dissolve 10.0 mol of Al, how many many moles of hydrogen gas could you make? NOTE: All numbers located immediately after elemental symbols should be considered subscripts
22. Suppose you were tasked with producing some nitrogen monoxide( a. k. a. nitric oxide). I ' m sure this is often requested of you. You can do it by combusting ammonia( be careful!). The equation would be as follows: 4NH 3 + 5O 2 → 4NO + 6H 2 O. If you form 3.50 mol of water, how much NO forms?