Answer:
<u>The answer is</u>: <em>B. </em><em>Energy lost to the environment during the reaction must be replaced.</em>
Explanation:
Answer: 1 dissociation. 2. Hydration. 3. Dissolving.
Explanation:
The number of atoms of phosphorus in copper (II) phosphate [Cu3 (PO4)2] is determined by multiplying first 9.20 by 2 since there are two phosphorus atoms in the compound and multiplying again with Avogadro's number. The answer is 1.108 x 10^25 atoms.
I think its pure substance since you are breaking into its components. For example if you were to break the components of salt apart (NaCl) You will be left with sodium and chloride which are the pure elements of salt. Therefore i believe pure is the best answer.