Answer:
20atm
Explanation:
according to boyles law P1V1= P2V2
3Mg(s) + 2FeCl3(aq) → 3 MgCl2(aq) + 2Fe(s)
Explanation:
Redox reaction is a reduction-oxidation reaction in which oxidation states of atoms involved in the reaction are changed. The elements that receive electrons are considered to be reduced while the element that donates the electrons is considered to be oxidized. In the case of this reaction, Fe in the FeCl₃ is reduced into Fe by gaining 3 electrons - while Mg is oxidized to MgCl₂ because it donates 2 electrons.
If you check the moles of Mg, FeCl₃, Fe, and MgCl₂; you'll get to notice that the exchange of electron is balanced at 6.
Answer:
molality of sodium ions is 1.473 m
Explanation:
Molarity is moles of solute per litre of solution
Molality is moles of solute per kg of solvent.
The volume of solution = 1 L
The mass of solution = volume X density = 1000mL X 1.43 = 1430 grams
The mass of solute = moles X molar mass of sodium phosphate = 0.65X164
mass of solute = 106.6 grams
the mass of solvent = 1430 - 106.6 = 1323.4 grams = 1.3234 Kg
the molality = 
Thus molality of sodium phosphate is 0.491 m
Each sodium phosphate of molecule will give three sodium ions.
Thus molality of sodium ions = 3 X 0.491 = 1.473 m
The empirical formula of the compound is the formula with the simplest ratio of the elements involved. The molecular formula is the formula that is the empirical formula multiplied by an integer. In this case, the molar mass of C2H3 is equal to 27 g/mol. 54.10/27 is approx. 2, so the molecular formula should be C4H6