Answer:
Re=2094,76
Explanation:
For a fluid that circulates inside a straight circular pipe, the Reynolds number is given by:
where (using the international measurement system):
- ρ: density of the fluid [kg/m3]
- v: velocity of the fluid [m/s]
- D: diameter of the pipe through which the fluid circulates [m]
- μ: dynamic viscosity [Pa.s]
To solve the probelm, we just need to replace our data using <u>THE CORRECT UNITS</u> in the Reynolds number equation. So we have:
ρ=1051 kg/m3,
v=34,3 cm/s=0,343 m/s
D=2,15 cm = 0,0215 m
μ = 3,7 cp * 10^-3 Pa.s/1 cp = 3,7*10^-3 Pa.s
Replacing in the main equation:
So the Reynolds number is 2094,76 (note that the Reynolds number is a dimensionless quantity).
Answer:
4.17L
Explanation:
V1 = 10L
V2 =?
P1 = 500torr
P2 = 1200torr
Boyle's law states that at constant temperature, the volume of a gas is inversely proportional to its pressure.
P1V1 = P2V2
V2 = ( P1 * V1 ) / P2
V2 = 4.17L
The new volume of the gas is 4.17L
Answer:
A
Explanation:
The solubility of a substance is directly proportional to the temperature. It means that solubility will increase with the increases in temperature. At higher temperature, the kinetic energy increased that allow the solvent molecules to break the solute particles more effectively.
Substance A has a higher solubility because the weight of substance A measured at the end of the experiment is less than the weight of substance B.
Hence, the correct answer is A.
answer: 3.40625 moles
Explanation: see the attached pics
I would go with C, because you would always start with products and end with reactants.
