Calculate the mass (grams) of excess reactant remaining after the reaction in the previous problem.

“Sunny 99.1”, an FM radio station in Houston, broadcasts at a frequency of 9.91 x 107 s–1 (99.1 MHz). What is the wavelength of these radio waves in meters? 

In a laboratory procedure, 0.032 L of a sulfuric acid solution of unknown concentration was titrated with 0.126 L of a 0.100 M sodium hydroxide solution, according to the following unbalanced chemical equation:___ H2SO4 (aq) + ___ NaOH (aq) —> ___Na2SO4 (aq) + ___ H2OWhat is the molarity of the H2SO4 solution?

Which atom of the following has the smallest radius?

Which one of the following sets of quantum numbers is not acceptable?     (n,  l,  m l , ms )

 How many grams of N2 are produced when 0.220 mol Br2 and 0.405 mol NH3 react? 3 Br2  +  8 NH3 —>  6 NH4Br +  N2Br2      159.80 g/molNH3      17.03 g/molNH4Br  97.94 g/molN2         28.02 g/mol

Which of the following atoms contains only four valence electrons?

What do the atoms of the elements in Group 1 (alkali metals) have in common? 

When 18.0 g of CS2 reacted with excess Cl2, the amount of carbon tetrafluoride (CCl4) that was obtained from the reaction was 24.1 g. Calculate the percent yield of carbon tetrachloride.   CS2  + 3Cl2  —>  CCl4  +  S2Cl2CS2      76.13 g/molCl2       70.90 g/molCCl4    153.81 g/molS2Cl2   135.02 g/mol

Ten identical copies of a movie are stored on 40 computers such that each computer has at most 1 copy. How many different ways can the 10 copies be stored?