6. How many hydrogen ions would need to be added to the phosphate ion
to form an acid with no charge?*

3 hydrogen ions

Explanation:

phosphate ion is (PO4)^-3. It has charge -3.

Hydrogen ion has charge +1.

So, we need 3 hydrogen ions,

3H^(+1) + PO4(-3) ---> H3PO4

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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