Why are comets unlikely to be able to support life? a. a comet's environment is not stable. b. a comet does not have an atmosphere. c. a comet does not have a reliable energy source. d. all of these

Write the balanced equation for a reaction between aqueous nitric acid (hno3) and solid lithium metal (this is a single replacement reaction)

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

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