When 20. milliliters of 1.0 m hcl is diluted to a total volume of 60. milliliters, the concentration of the resulting solution is 1. 1.0 m 2. 0.50 m 3. 0.33 m 4. 0.25 m

Draw the lewis dot structure for each of the following polyatomic ions

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

The most common form of matter in the universe