Problem: Convert 30 cm to mm.
Need full process pls help

300mm

Explanation:

30cm x (10mm/1cm) x (1mm/1mm) = 300mm

Btw, I'm not sure about the (1mm/1mm).

*tilts head* sounds more like a statement

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.