How many Sr2+ ions are in a mole of Sr3(PO4)2 ?

Question

anonymous · Answer

and then i also need to know how many PO43− ions are in a mole of Sr3(PO4)2 ?

mertsj · Answer

Sr3 would be 3 moles of Sr2+ ions

mertsj · Answer

And 2 moles of PO4 ions

anonymous · Answer

it says express the answer with four significant figures

mertsj · Answer

Ok.  Then do that.

anonymous · Answer

how?

mertsj · Answer

So I take it you don't know how many ions are in a mole?

anonymous · Answer

im lost i am missing school cause i am sick so yeah...

mertsj · Answer

1mole contains Avagadro's number of ions

mertsj · Answer

Avagadro's number is 6.023 x 10^23

anonymous · Answer

so is it 3*6.022*10^23?

mertsj · Answer

yes

anonymous · Answer

i have another question, will you help?

mertsj · Answer

I get the feeling I am doing some sort of test for you since the topics are so unrelated.

anonymous · Answer

no you are helping me with my chapter six chemistry homework

mertsj · Answer

Oxidation reduction with no examples in the chapter?

anonymous · Answer

it took place in chapter five

mertsj · Answer

I've seen lots of chem books but none that tried to teach re-dox without examples.

mertsj · Answer

So the chapter 6 homework covers the chapter 5 material?

anonymous · Answer

well it does but it does not say how the website wants the equation. the book and the website are made from two different companies and yes