Calculate LCM(348, 120) using prime factorizations.

Which 0.10 M solution will conduct electricity?

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

Which of the following elements has the largest electronegativity?  

In which of the following sets of elements does each of the elements have a TWO-LETTER symbol?  

An unknown acid is less acidic than lemon juice.  Compare to the lemon juice, the unknown acid has a (a)  larger hydrogen ion concentration and higher pH. (b)  smaller hydrogen ion concentration and higher pH. (c)  smaller hydrogen ion concentration and lower pH. (d)  larger hydrogen ion concentration and lower pH.

Solid MnO2 is which type of solid? (a) ionic solid (b) molecular solid (c) metallic solid (d) no correct answer given

Determine the excess reactant from the following reaction between 3.0 mol X reacts with 2.0 mol Y.  (Given the atomic mass of X = 39.10 and Y =30.97)                   3 X (g) + Y (g) → X3Y (g)  

Which number best approximate the value of this expression

Which of the following is the the correct Lewis structure for SiS2, silicon disulfide? 1           2        3