Answer:
Solution A is correct.
Explanation:
Strong acids or bases are assumed to dissociate completely when in a aqueous solution.
Answer:
The solar energy is converted to chemical energy by the process of photosynthesis - This is the true statement of the given question.
Explanation:
An ecosystem usually refers to the biological community comprising all the types of living species that are continuously interacting with the surrounding environment. Most of these ecosystems are solar-powered, and by this phrase, it means that there occurs the transformation of energy from solar to chemical energy which is taking place due to the process of photosynthesis. Both the terrestrial and the aquatic, are able to carry out this process in the presence of sunlight, water, and CO₂, and in return, it liberates food and oxygen into the ecosystem.
Thus, this statement satisfies the given phrase.
All other options are false as it does not justify the phrase.
The molarity of a substance is the number of moles of the substance present per liter. We are given the mass per liter, which is 292 grams. We may convert this into moles by dividing by the molecular mass of magnesium nitrate. This is:
Mg + 2 * NO₃⁻
24 + 2 * (14 + 16*3)
Mr = 148 g/mol
The molarity of the solution is:
M = 292/148 = 1.97 moles / liter
The solution has a molarity of 1.97 M
