Answer:
The correct options include choice 2, 3, and 6.
Explanation:
Density is identified as the mass of a substance per unit volume occupied by that substance.
The density remains constant for a given substance, regardless of variations in mass and volume hence it is considered an intensive property.
2. 20.2 g of silver in 21.6 mL of water and 12.0 g of silver also in 21.6 mL of water.
3. 15.2 g of copper in 21.6 mL of water and 50.0 g of copper in 23.4 mL of water.
6. 11.2 g of gold in 21.6 mL of water and 14.9 g of gold in 23.4 mL of water.
The same metals in both instances will yield consistent densities due to the fixed density of the metal.
Response: Option A) The lattice energy rises as cations become smaller, as demonstrated by LiF and KF.
Clarification: It has been observed that the lattice energy is largely determined by two primary factors regarding ionic solids:
i) The ionic charges - An increase in the charge of the ions corresponds to an increase in lattice energy.
and
ii) The size or radius of the ions - As the ionic size grows, the lattice energy diminishes accordingly.
Therefore, in this context, the latter factor is evident. Thus, it can be concluded that as cation sizes decrease among ionic solids, the lattice energy increases.
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.
Atoms have their protons and neutrons situated in the nucleus.
Electrons orbit in the outer shells, also known as orbitals.
Subatomic particles, comprising protons, neutrons, and electrons, reside within the atoms.
Answer: The complete balanced chemical equation is,
Explanation:
A chemical equation represents the reactants on the left and the products on the right, separated by a right-pointing arrow indicating the reaction.
This representation includes the phases of the substances and uses subscripts and superscripts for numbers.
For the reaction given, the balanced chemical equation with phases is:
