I would say the answer is A.
Green plants transform solar energy<span> to </span>chemical energy<span> (mostly of oxygen) through the </span>process<span> known as photosynthesis, and electrical </span>energy<span> can be converted to </span>chemical energy<span> and vice versa through electrochemical reactions.</span>
Answer:
Thus,there are 0.2 mole in 8 g of calcium.
Examination by a test; experiment, as in chemistry, metallurgy, etc.