Which of the following describes a nonspontaneous reaction? A. The Gibbs free energy is less than the activation energy.
B. The reaction does not need added energy to occur.
C. The Gibbs free energy is more than the activation energy.
O D. The Gibbs free energy for the reaction is positive.

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

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 human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.