A student places 161.6 mg hydrogen peroxide gas into a 19.00mL sealed container. The hydrogen peroxide decomposes into oxygen and hydrogen gas until the system reaches equilibrium. At room temperature the equibilirum contact for this decomposition reaction is K=1.00x10^-3. What is the concentration of hydrogen peroxide at quiblirium?

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?