Answer is D organs because cell forms tissues, tissues form organs and organs forms the organ system
Answer:
CO32−
Explanation:
We have to consider the valencies of the polyatomic ions involved. Recall that it is only a polyatomic ion with a valency of -2 that can form a compound which requires two sodium ions.
When we look closely at the options, we will realize that among all the options, only CO32− has a valency of -2, hence it must be the required answer. In order to be double sure, we put down the ionic reaction equation as follows;
2Na^+(aq) + CO3^2-(aq) ---------> Na2CO3(aq)
Answer:
A) potential energy is stored energy. Kenetic energy is energy of motion.
((|Vtrue-Vobserved|) / (Vtrue)) x 100
1.77777%error
An endothermic reaction is when the energy is absorbed, while an exothermic reaction releases energy.
