August 2017 Chemistry Regents Questions 21-30

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Which reaction occurs at the anode of an electrochemical cell?

Which substance is an electrolyte?

Which radioisotope is used to determine the age of once-living organisms?

In which process does a heavy nucleus split into two lighter nuclei?

The amount of randomness of the atoms in a system is an indication of the

At STP, a 12.0-liter sample of CH4(g) has the same total number of molecules as

When a sample of Ca(s) loses 1 mole of electrons in a reaction with a sample of O2(g), the oxygen

At standard pressure, during which physical change does the potential energy decrease?