A polyatomic ion.
Examples: Sulfate, Sulfite, Nitrate, Nitrite...
Answer:
the answer is v and z. you can see the pic
Answer:
The volume of the liquid should be measured before it is heated.
Explanation:
Because During an experiment to test how a variable changes a substance, it is important to first observe and record the characteristics of the substance before the variable is introduced. In this case, the variable is heat energy.
