. The decomposition of hydrogen peroxide has the rate law: k (H₂O₂). The rate constant is 1.06×10^-3.
How long will it take for the concentration of Hydrogen peroxide
to drop from
0.020omol per dm^3 to0.0120 mol per dm^3?
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what are the choices?

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.