Ca3(PO4)2 is the correct formula.
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.
The formula for molality is

Given: A solution's molality equals 2.25 m
The weight of the solvent is 30 g, which is the same as 0.030 kg
Molecular weight of AlCl3 is 133.34 g/mol
Thus, we have the equation, 2.25 =

Therefore, the weight of the solute (g) becomes 9.00 g
Hence, <span>
9.00 g of AlCl3 is necessary for creating a 2.25m solution in 30.0 g of water</span>
Answer:
This is a satellite that gathers information on rainfall and snow.
• Its orbit spans 90 percent of the Earth's surface.
• The sensors detect microwaves.
Explanation:
Right on track
Unused chemicals should never be returned to their original containers, as this could lead to contamination. The leftover chemicals should be disposed of in the appropriate waste bin. If there is uncertainty about the procedure, consult your teacher.