if barium ions have a charge of 2= nd hydroxide ions have a charge of 1-, the compound calcium is what?
what dose porosity mean?
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.
Since this is not my area of expertise, I searched Google under the key words "porosity" to get these possible sources:
http://www.google.com/search?client=safari&rls=en&q=porosity&ie=UTF-8&oe=UTF-8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
To determine the compound formed between barium ions (Ba²⁺) and hydroxide ions (OH⁻), we need to consider the charges of the ions.
Since barium ions have a charge of 2+, and hydroxide ions have a charge of 1-, we need to find the least common multiple (LCM) of these charges to balance the charges in the compound.
The LCM of 2 and 1 is 2.
To balance the charges, we need two hydroxide ions (2 × 1- = 2-) for every barium ion (1 × 2+ = 2+).
Therefore, the compound formed between barium ions and hydroxide ions is Ba(OH)₂, which is called barium hydroxide.