When taking pH measurements of solutions, why is it important to stir thoroughly after adding each reagent? Select one:
A. Mixing helps ensure that the measured pH is reflective of the entire solution.
B. Mixing helps keep the solution components from contaminating the pH meter.
C. Mixing helps prevent precipitation of insoluble salts out of solution.
D. A pH meter can only measure ions that are flowing past the meter at a fast speed.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

the answer is a. co2, this would be colder than the : )

explanation:

14,16 18 reacts with group