1). Write a complete scientific explanation about either burning of magnesium is a chemical reaction 2). What cause the mass of the material in the dish to change after burning

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.

its first and third is your answer i did the qustion the fourth isnt right

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.