Asynthesis reaction can be identified because it only has pure elements on the left side of the arrow and compounds on the right side of the arrow. true false

False

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions. Example: Hydrogen

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water

Synthesis reaction is a type of reaction in which multiple reactants combine to form a single product.Compounds can also combine to give other compounds as in the given reaction:

Thus the statement is false.

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.