Calculate the freezing point of 0.5g of biphenyl in 20.0mL of cyclohexane. Cyclohexane Fp = 6.5 Celsius Kf 20.01 Thank you! :)

What are the similarities of physical and chemical change ?

Geothermal energy for industrial use is available almost anywhere. a. true b. false

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