Choose one answer to this question: In MLA, a writer cites each source twice: Where?

What is Arrhenius definition of a base? (a) a proton acceptor (b) produce hydroxide ion (c)  change color of litmus from blue to red (d) no correct answer given

How many of the following metals is/are type II metal(s)? (a)  Au             (b)   Mg               (c)  Zn                   (d)  Co                (e)  Na

pH of a solution that has a H⁺ concentration equals to 5.9 × 10-8 M is  

Which of the following substances is a gas in liquid solution? A) air B) wine C) soda water D) sweet tea E) no correct answer given

What is the oxidation number for X in the following arbitrary anion,

Which 0.10 M solution will conduct electricity?

What is the percent composition of O (% O) in C7H12O20? Atomic weights of C = 12.0, H = 1.0, O = 16.0 A)  20.2 B)  2.88 C) 76.9 D)  no correct answer given

Which of the following is an acceptable Lewis structure for C3H6O?

Name this compound: Pt3(PO4)4 Pt is platinum. (Hint: first determine whether Pt is a type I or type II metal)