Answer:
33.21% is the right answer.
Explanation:
0.04720 L * 0.02240 mol / L = 1.0573*10-3
mol Fe+2 = 1.0573* 10-3 mol = 5.2864*10-3
mass of Fe= 5.2864 * 10-3 = 0.29522g
% of Fe in sample = 0.29522 g Fe / 0.8890 g of sample * 100 = 33.21%
The answer would be D. Soluble means that it can be dissolved by water.
1) adaptations for flight
Answer:
Option c. It contians ionic bonds
Explanation:
Let's take as an example NaCl
An element from group 1 (alkali) with an halogen.
Elements from group 1 form cations with +1 (charge)
This ionic salt, can't never has the formula XZ₂
Ionic salts, also can be dissolved in water, and they don't contain covalent bonds.
Answer:
Standardisation is used to determine the concentration of a volumetric solution in order to achieve accurate and reliable titration results