Consider the full set of reactions required to purify zinc metal. Step 1: ZnCO3 + heat → ZnO + CO2
Step 2: ZnO + C + heat → Zn + CO

How do the oxidation numbers of Zn and C change throughout these two reactions? Which compound is the oxidizing agent and which is the reducing agent in each step?

What is the number of moles in 15.0 g ash3?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.