What type of galaxy is pictured? A.) elliptical
B.) irregular
C.) lens
D.) spiral

When a septic tank backs up a goes in to clean it out

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