The family that contains disinfectants is the

noble gases
transition metals
strong metals
halogens

An observation that requires measurement is called quantitative observable or qualitative

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

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