Use the dropdown boxes to balance the reactions below.  If a coefficient is one, normally we would leave it blank.  However, for the sake of testing it will be okay to choose “1” for balancing an equation.  Fe2O3 + H2SO4 –> Fe2(SO4)3 + H2O

NaOH forms a strong electrolyte in an aqueous solution.

Using formal charges, predict the most favored structure.

Indicate the gas with the lowest density at STP.

How many hydrogen atoms are there in a 346 g sample of pure ammonia (NH3, 17.0 g/mol)?

A chemical formula in which the subscripts represent the simplest whole-number ratio of the atoms or ions in a compound.

Rank the following solutions from the most conductive to the least conductive. All solutions are 0.1 M.

When is a noncommercial applicator license required?

How many nitrogen atoms are there in 51.0 g of (NH4)2SO4 (ammonium sulfate, 132.14 g/mol)?

Mass analysis of a common drying agent of organic molecules reveals that it has the empirical formula P2O5. If the molar mass is 283.89 g/mol, which molecular formula is correct?