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)  

Which molecule has a trigonal pyramidal geometry?   (a)  CS2                  (b)  NBr3                 (c)  H2O                   (d)  CH2O

The empirical formula of a compound is CH.  If the molar mass of this compound is 78.0 g, then the molecular formula is (Note: all the numbers in the answers are subscripts)

If you have 8.36 x 1026 molecules of H2O.  How many moles of H2O do you have? A)  13.9 mole B) 1390 mole C) 5.03 x 1050 moles D) 0.000720 moles