What is the empirical formula of a compound consisting of 85.6% C and 14.4% H by mass?

What is the mass of ZnSO4 (molar mass: 161.47 g/mol) needed to prepare 250.0 mL of 1.80 M ZnSO4 solution?

In general, stronger bond has a _______ bond length and a ________ bond enthalpy.

What is the formula of an oxide of an alkali metal (M)?

What is the valence electron configuration of In (element #49)?

How many carbon atoms are in 20.0 g of C3H6 (molar mass: 42.08 g/mol)?

Which of the following is true when a solution is diluted? I. The amount of solute remains the same. II. The concentration of the solution decreases.

Given that 1 inch (in) = 2.54 cm, 33.8 in2 = ________ cm2

In general, ionization energy ____ down a group and ____ from left to right across a period.

Which of the following is true when a solution is diluted? I. The amount of solvent remains the same. II. The concentration of the solution decreases.