Given the equation representing a reaction:

2Ca (s) + O2 (g) → 2CaO (s)

During this reaction, each element changes in

1) atomic number

2) oxidation number

3) number of protons per atom 4) number of neutrons per atom

Consider the following system at equilibrium:D (aq) + E (aq) F (aq) Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

What is a metric unit of time

In which solution will thymol blue indicator appear blue?

Which part of the mantle is still solid but flows like a heavy liquid

How many valence electrons are found in the outermost energy level of fluorine ( f.?

Which is a product in the following chemical reaction? CH4 + 2O2 → CO2 + 2H2O CH4 H4 H2O O2

How many Mg atoms are present in 170g of Mg

The kinetic theory assumes that collisions of gas particles are perfectly elastic. What does this statement mean?

Roger believes that he is following a healthy regime by taking lots of vitamin E everyday. What property of vitamin E makes Roger's practice potentially unhealthy?

A 68-kg man whose average body temperature is 39°C drinks 1 L of cold water at 3°C in an effort to cool down. Taking the average specific heat of the human body to be 3.