Answer:
For CMFR:
V = 5286 m³
t = 2.6 hr
For PFR:
V = 529 m³
t = 19 minutes
Explanation:
Find attached for the calculation.
Ponds are most likely to dry up
Density is mass divided by volume, so the answer is B.
Answer:
0.33 M
Explanation:
From the question given above, the following data were obtained:
Mass of K₂Cr₂O₇ = 9.67 g
Volume of solution = 100 mL
Molarity =?
Next, we shall determine the number of mole in 9.67 g of K₂Cr₂O₇. This can be obtained as follow:
Molar mass of K₂Cr₂O₇ = (39×2) + (52×2) + (16×7)
= 78 + 104 + 112
= 294 g/mol
Mass of K₂Cr₂O₇ = 9.67 g
Mole of K₂Cr₂O₇ =?
Mole = mass /Molar mass
Mole of K₂Cr₂O₇ = 9.67 / 294
Mole of K₂Cr₂O₇ = 0.033 mole
Next, we shall convert 100 mL to litre (L). This can be obtained as follow:
1000 mL = 1 L
100 mL = 100 mL × 1 L / 1000 mL
100 mL = 0.1 L
Finally, we shall determine the molarity of the solution. This can be obtained as follow:
Mole of K₂Cr₂O₇ = 0.033 mole
Volume of solution = 0.1 L
Molarity =?
Molarity = mole / Volume
Molarity = 0.033 / 0.1
Molarity = 0.33 M
Thus, the molarity of the solution is 0.33 M
