Antimony cannot be broken down by chemical means because it is an element, a principle building block of matter. All other choices are compounds, which can be separated if put through enough stress to break the bonds between the atoms.
Given:
0.060 mol of NiC2O4
Ksp = 4 x 10⁻¹⁰
1.0 L of solution
Kf of Ni(NH3)6 2⁺ = 1.2 x 10⁹
<span>NiC2O4 + 6NH3 ⇋ Ni(NH3)6 2+ + 2O4 2- </span>
<span>NiC2O4 ⇋ Ni 2+ + C2O4 2- ...Ksp </span>
<span>Ni2+ + 6NH3 ⇋ Ni(NH3)6 2+...Kf </span>
Ksp * Kf = (4 x 10⁻¹⁰) * (1.2 x 10⁹) = 0.48
K = 0.48 = [Ni(NH3)6 2+][C2O4 2-] / [NH3]⁶<span>
</span>0.48 = (0.060)² / [NH3]⁶<span> ... (dissolved C2O4 2- = 0.060M)
</span><span>[NH3]</span>⁶<span> = (0.060)</span>²<span> / 0.48 = </span>0.0036 / 0.48 = 0.0075
NH3 = ⁶√0.0075
NH3 = 0.44 M
Answer:
lose electron
Explanation:
If the oxidation number is positive, this means that the atom loss electrons.
Losing electrons makes the atom lose some of its negative charge and become more positively charged.
Hope that helps.
Number of grams in 1 mole = 6.23 * 10^23
Now, in 20.50, it would be: 20.50 / 6.23 * 10^23 = 3.4 * 10^-24 moles
In short, Your Answer would be Option A
Hope this helps!
In the order from top to bottom,
Vacuole
Plant cells only
Site of protein synthesis
Endoplasmic reticulum
Cytoplasm
Nucleus
Chloroplast
Lysosyme
Ribosome
Cell wall
Mitochondria
Packages proteins for transport out of the cell.