the balanced equation for the above reaction is as follows; 3NiCl₂ + 2K₃PO₄ ---> Ni₃(PO₄)₂ + 6KCl stoichiometry of NiCl₂ to K₃PO₄ is 3:2 the number of NiCl₂ moles reacted - 0.0102 mol/L x 0.134 L = 0.00137 mol according to molar ratio if 3 mol of NiCl₂ reacts with 2 mol of K₃PO₄ then 0.00137 mol of NiCl₂ reacts with - 2/3 x 0.00137 = 0.000911 mol of K₃PO₄
molarity of given K₃PO₄ solution - 0.205 M there are 0.205 mol in 1000 mL therefore volume of 0.000911 mol - 0.000911 mol / 0.205 mol/L = 4.44 mL volume of K₃PO₄ needed is 4.44 mL
They can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy
Joseph Proust is the founder of the Law of Definite proportion. This law states that two elements will always combine together to form a chemical compound and this will be in the same proportion by mass.
For Example: 2 moles of Hydrogen (H2) ALWAYS combine with 1 atom of Oxygen (O) to yield water (H2O)
