In the reaction Zn + H2O --> ZnO2 + H2
which element, if any, is oxidized?
Please help?!

Forests and meadows are often cut down to make way for farms or large number of new homes. what are some of the elements of ecosystems that are lost when plants in these areas are removed?

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

The sum of the oxidation numbers in a neutral compound is always