Defin steric effect, resonance effect and medium effect? give at least 3 example for each?

Water is a highly important natural resource. which of these would be the best method to conserve water? a) drinking bottled water b) monitoring the ph of rivers c) treating and re-using wastewater d) testing nitrate levels in groundwater

If a molecule is polar, what kind of bonds will it have

What type of reaction is this equation c2h5s + o2 > co2 + h2o + so2