<span>Which best explains why some radioisotopes decay in a decay series?
</span><span>
The correct answer is:
Some unstable materials decay radioactively into other unstable materials.
</span>Radioactive decay a the spontaneous process through which an unstable atomic nucleus breaks into smaller, more stable fragments. <span>It's basically a matter of thermodynamics. Every atom seeks to be as stable as possible. In the case of radioactive decay, instability occurs when there is an imbalance in the number of </span>protons<span> and </span>neutrons<span> in the atomic nucleus.</span>
0.375 L of the NaCl solution contains 0.455 moles (1)
since it was diluted to 1.88 L
then let 1.88 L of solution contain x moles (2)
by combining both (1) and (2)
⇒ (0.345 L) x = (0.455 mol) (1.88 L)
⇒ x = (0.242 mol · L) ÷ (0.345 L)
⇒ x = 0.702 mol
Thus the molarity of the NaCl after being diluted is 0.702 M OR 0.702 mol / L OR 0.702 mol/dm³.
Calcium chloride contains only one calcium and 2 chloride atom thus it's ionic formula would be CaCl2.
Metallic bonds are found in metals like zinc.
I think D?? I apologize if not-check in other answers to be sure ^^
