Which property of manganese dioxide helps it turn hydrogen peroxide into water faster than it would without it? A. Manganese dioxide is an acid.
B. Manganese dioxide is a catalyst.
C. Manganese dioxide is highly reactive.
D. Manganese dioxide is used up very fast.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

Which words or phrases identify layers of groundwater? check all that apply. water table kettle lake saturation zone underground lake sinkhole will give brainiest, answer quickly.

If 10.5 l of a at 0.98to 1.50 , is ?