Answer:
Aluminum had more value than gold in the 1820s, because it was harder to obtain. Hope this helped :)
Answer:
Ya'll should really practice more because things like these are easy
Explanation:
There are 3,500 milliseconds in 3.5 seconds. Hope this helps!
Answer:
Carbonates (CO3-2), phosphates (PO4-3) and sulfides (S-2) are insoluble.
The exceptions are the alkali metals and the ammonium ion.
