OPTIONAL: If you want the possibility of partial credit for wrong answers to the other question on this page, upload your work or give your rationale here. You are also welcome to upload an audio explanation. Please ensure that any attachment is upright and legible.  For your uploads: please label the file with your name, and some indication of which problem it is (not the problem number, but something about the problem. The problems are shuffled so not everyone has the same number). It is intended that you be able to upload your work here and use whatever apps you need to do so. However, if you run into any issues doing so with Honorlock, you may email me your work or upload to “assignments”. Be sure that you have clearly labeled everything, and write something in the textbox so that I know (e.g. “I uploaded this problem to D2L and labeled it ‘problem 2 the problem about ____”). 

 Write an expression logically equivalent to the following expression and that doesn’t use the arrow (if-then) symbol. Make your expression as simple as possible. Show all your work.  ¬ ( p → q ) {“version”:”1.1″,”math”:”\neg (p\rightarrow q)”} It is intended that you be able to upload your work here and use whatever apps you need to do so. However, if you run into any issues doing so with Honorlock, you may email me your work or upload to “assignments”. Be sure that you have clearly labeled everything, and write something in the textbox so that I know (e.g. “I uploaded this problem to D2L and labeled it ‘problem 2 the problem about ____”). 

Identify the contrapositive of  r → s {“version”:”1.1″,”math”:”r\rightarrow s “}

Which of the following are propositions? Assume that Q(x) and R(x) and predicates, and that the domain is the set of positive integers. Select all the apply.

Which has greater electronegativity? Oxygen, or Hydrogen?

What are simple substances which cannot be decomposed by ordinary chemical means?

Which of the following is hydroxide ion?

True or False? Ammonium ion is a cation.

UCBA has computers (loaner laptops and on-site computers) that students may use to take exams. UCBA also has reliable WiFi and quiet places where students can take exams.   Please select the answer that best applies to you.

Consider the reaction of iron (III) oxide with carbon to form iron metal and carbon dioxide gas: 2 Fe2O3 (s) + 3 C (c) →  4 Fe (s) +  3 CO2 (g)