Four binary ionic compounds that could be formed from each of these ions are;
- Zn^2+ - ZnCl2, ZnI2, ZnBr2, ZnF2
- Pb^4+ - PbF4, PbCl4, PbBr4, PbI4
- Br^- - MgBr2, NaBr, CaBr2, KBr
- S^2- - CaS, MgS, Na2S, K2S
<h3>What are binary ionic compounds?</h3>
Binary ionic compounds are those compounds that contain only two elements. The ionic compounds are those compounds that contain ions. The compounds are able to dissolve in water and they have high melting and boiling points.
Now, four binary ionic compounds that could be formed from each of these ions are;
- Zn^2+ - ZnCl2, ZnI2, ZnBr2, ZnF2
- Pb^4+ - PbF4, PbCl4, PbBr4, PbI4
- Br^- - MgBr2, NaBr, CaBr2, KBr
- S^2- - CaS, MgS, Na2S, K2S
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The correct answer is 1.6 × 10¹⁰ .
The volume of ice chunk can be calculated by using the formula length × breadth × height
The length of the ice chunk given is 98 m, the breadth of the ice chunk given is 25 m and the thickness of the ice chunk given is 750 m,
= 98 × 25 × 750 × 0.000189
= 347.9 m³
= 3.831 × 10¹⁴ gal
Water in swimming pool is 24000 gal
Therefore, number of pools that can be filled = 3.831 × 10¹⁴ / 24000
= 1.596 × 10¹⁰
= 1.6 × 10¹⁰
S phase. To produce 2 similar daughter cells, the complete DNA instructions in the cell must be duplicated. its also called the Synthesis Phase.
Thermal energy is an example of kinetic energy, as it is due to the motion of particles, with motion being the key. Thermal energy results in an object or a system having a temperature that can be measured. Thermal energy can be transferred from one object or system to another in the form of heat. hope this helps
Ni(OH)₂ ⇄ Ni⁺² + 2 OH⁻
Ksp = [Ni⁺²][OH⁻]² = S (2S)² = 4S³
where S is molar solubility.
at pH = 10
[H⁺] = 10⁻¹⁰
[H⁺][OH⁻] = 10⁻¹⁴
so [OH⁻] = 10⁻⁴ M
Ksp = S [10⁻⁴ + 2S]²
Ksp is very small so the molar solubility of OH⁻ will be very small
so (10⁻⁴ + 2S) is about 10⁻⁴
so Ksp = S x 10⁻⁸
S =
= 6 x 10⁻⁸ M
