Fish, plakton, dolphines, wales, coral, sponges etc...
<h3><u>Answer;</u></h3>
They are anions.
<h3><u>Explanation</u>;</h3>
- Polyatomic ions are the ions that contain 2 or more different atoms that are covalently bonded to each other.
- Examples include; Nitrate : NO₃⁻, Sulfate : SO₄²⁻,Hydroxide : OH⁻, and Phosphate : PO₄³⁻, etc.
- Polyatomic ions are tightly bound group of atoms that has a positive or negative charge and behaves as a unit.
700 N in the direction of the engine
The concept required to solve this problem is that related to the Isobaric process. Isobaric process is understood as the process in which changes occur at constant pressure. From the first law of thermodynamics this can be expressed as,
Here,
P = Pressure
dV = Differential of Volume
As the Pressure is constant we have,
Replacing
Therefore the correct answer is A.