How many protons does Mg²₊ have?

When energy changes from one form to another what energy always changes into

Why isn't atomic emission used to measure all the elements instead of atomic absorption?

Explain the difference between the spontaneity of a reaction (which depends on thermodynamics) and the speed at which the reaction occurs (which depends on kinetics). can a catalyst make a nonspontaneous reaction spontaneous?

According to legend, archimedes, who was a famous greek mathematician, was given a crown, which was supposed to be made of pure gold but contained some silver alloy, by king hiero ii of sicily.

Certain organisms are able to store energy from the sun in energy rich compounds. Which event best illustrate this activity?

What was concluded about the structure of the atom as the result of the gold foil experiment? (1) A positively charged nucleus is surrounded by positively charged particles. (2) A positively charged nucleus is surrounded by mostly empty space.

Andre is predicting the products of chemical reactions. In one reaction, a hydrocarbon is the only reactant. What is the best prediction and explanation of this reaction? Two new compounds form as the hydrocarbon undergoes a synthesis reaction.

What evidence is there that electrons move around in definite pathways around the nucleus? What evidence is there that electrons m

Are greenhouse gases good for us?

How to convert metric units?