Answer:
A, B, and C
Explanation:
Indeed, atoms possess mass and serve as the fundamental building blocks of chemical elements. While matter is composed of atoms, these particles themselves do not occupy physical space.
Atoms consist mostly of void, which excludes them from the other responses.
This confirms that A, B, and C are the right choices.
The interaction between calcium carbonate and hydrochloric acid can be represented by the chemical equation,
CaCO3 + 2HCl --> CaCl2 + H2O + CO2
Calcium carbonate has a molecular weight of 100 g/mol, while hydrochloric acid's molecular weight is 36.45 g/mol. According to the equation, 100 g of calcium carbonate reacts with 72.9 g of hydrochloric acid.
x = (4 g HCl)(100 g CaCO3 / 72.9 HCl)
x = 5.49 g
Final result: 5.49 g
