Answer:
The answer is "
"
Explanation:
The water solution of PbCl2 is poor. It also has 2 distinct dissolving properties. In cold water, this will not dissolve easily.It is water-insufficiently soluble. And that in cold water, it is indeed insoluble. That's why we know that all energy should be available for a solid to dissolve in the liquid to counteract that attractive force between the ions in the grid.
Solid -> gas will need the increase in kinetic energy
The balanced chemical equation for the reaction of hexane with O₂ is given below;
2C₆H₁₄ + 19O₂ --> 12CO₂ + 14H₂O
Stoichiometry of hexane to oxygen is 2:19
number of hexane moles - 41 g / 86.2 g/mol = 0.476 mol
number of oxygen moles - 150 g / 32 g/mol = 4.69 mol
we need to find which reagent is the limiting reactant
If hexane is the limiting reactant
2 moles of hexane reacts with -19 mol of oxygen
therefore 0.476 mol - 19/2 x 0.476 = 4.522 mol
since 4.69 mol of oxygen is present, O₂ is in excess and hexane is the limiting reactant.
stoichiometry of hexane to water is 2:14
2 mol of hexane gives 14 mol of water
therefore 0.476 mol of hexane forms - 14/2 x 0.476 - 3.33 mol
mass of water formed - 3.33 mol x 18.0 g/mol = 59.9 g
Answer:
Benzoic acid and sodium benzoate are members of a family of food additives whose ability to the rate at which food spoils has helped produce a 10-fold decrease in the incidence of stomach cancer. To save time and space, we'll abbreviate benzoic acid as HOBz and sodium benzoate as NaOBz. Benzoic acid, as its name implies, is an acid.
Explanation:
Answer:
Explanation:
Fe⁺³ + SCN⁻ = FeSCN²⁺
x x x
If x mole of Fe⁺³ reacted , unreacted Fe⁺³ = .02 - x
Remaining SCN⁻ unreacted = .1 - x
K_c = [ FeSCN²⁺] / [Fe⁺³] [ SCN⁻]
1.1 x 10³ = x / ( .02 - x ) (.1 - x )
1100 = x / .002 - .12x ( neglecting x² )
x = .0165
Concentration of Fe⁺³ = .02 - x = .0035 M
Concentration of SCN⁻ = .1 - x = .0835 M
Concentration of FeSCN²⁺ = x = .0165M