answer is B
because both sides have equal numbers of atomos
Answer:The tendency toward randomness drives the solution process. & The new solvent-solute intermolecular attractions must about the same as the solvent-solvent and solute-solute attractions.
Explanation:
Increase in entropy is a major driving force in chemistry. The dissolution of particles in solvent increases the entropy of the solution hence is a driving force and an important factor that influences solubility. Secondly, the degree of solute-solvent interaction must be approximately the same as that of solute-solute and solvent-solvent interaction since like dissolves like and dissolution of a solute in a solvent depends on intermolecular interaction between solute and solvent.
Answer:
The answer to your question is: 516 g of water
Explanation:
2 C₇H₁₄ + 21 O₂ → 14 CO₂ + 14 H₂O
8 moles 43 moles
Process
1.- Find the limiting reactant
Ratio theoretical O₂ / C₇H₁₄ = 21 / 2 = 10.5
Ratio experimental O₂ / C₇H₁₄ = 43 / 8 = 5.3
As the ratio diminishes the limiting reactant is O₂.
2.- Calculate the moles of water
21 moles of O₂ ------------- 14 moles of water
43 moles of O₂ ------------ x
x = (43 x 14) / 21
x = 28.67 moles of water
3.- Calculate the grams of water
Molecular mass of water= 18g
18 g ------------------------ 1 mol of water
x ------------------------ 28.67 moles of water
x = (28.67 x 18) / 1
x = 516 g of water
Answer:
Molarity(M) = 0.24M in (NH₄)₂Cr₂O₇.
Explanation:
By definition a solution is a homogeneous physical mixture of two substances, a solute (item in least amount) and solvent (item in greatest amount). Typically the solution is generally described in terms of the concentration of solute in solution (solute + solvent). Concentration is, by definition amount of solute divided the volume of solution. That is ...
concentration = amount solute / volume of solution
There are numerous unit expressions of concentration such as lbs/gal, lbs/ft³, grams/ml and molarity(M). For this problem, Molar Concentration following concentration definition is ...
Molarity(M) = moles solute / volume of solution in liters
moles of (NH₄)₂Cr₂O₇ = 30.05g/252.07g/mole = 0.12mole
Volume of Solution = 500ml = 0.500Liters
∴Molarity = [(NH₄)₂Cr₂O₇] = 0.12 moles / 0.500L = 0.24M in (NH₄)₂Cr₂O₇.
Note => the brackets [ ] around the formula (NH₄)₂Cr₂O₇ indicates Molar concentration.
According to Faraday's Law,
W = I t e / F
Where,
W = Amount deposited = 3.66 g
I = Current = 3 A
t = Time = 60 min = 3600 s
e = Chemical equivalence
F = Faraday's Constant = 96500
Solving for e,
e = F W / I t
Putting Values,
e = (96500×3.66) ÷ (3 × 3600)
e = 32.7
As we know,
e = M / 2
solving for M,
M = e × 2
Putting value of e,
M = 32.7 × 2
M = 65.4
M = Zinc
