Answer:

Explanation:
By reading the statement, it is inferred that molarity must be computed. The amount of moles of hydrocloric acid is:


Finally, the molarity of the solution is:


I think it B or C
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Answer:
Decomposition
Explanation:
The equation 2 H₂O₂ → 2 H₂O + O₂ is an example of a decomposition reaction. During decomposition, a compound breaks down into two or more products under the favorable conditions, without combining with other reagents.
However, the reaction can be catalyzed using a suitable catalyst.
Answer: Mass of one mole of viruses in grams is
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number
of particles.
Given : One virus has mass of =

One mole of virus
has mass of =
Thus mass of one mole of viruses in grams is