How many oh- ions are present in 3.00 mol of ca(oh)2?

The number of ions present in given amount of calcium hydroxide is

Explanation:

Equation representing ionization of calcium hydroxide follows:

is a base which releases 2 hydroxide ions

According to mole concept:

1 mole of a compound contains number of molecules of ions.

So, 3 moles of will contain number of ions

Hence, the number of ions present in given amount of calcium hydroxide is

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.