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:
−2399.33 kJ
Explanation:
If NH₄NO₃ reacts with fuel oil to give a ΔH of -7198 for every 3 moles of NH₄NO₃
What is the enthalpy change for 1.0 mole of NH₄NO₃ in this reaction
∴ For every 1 mole, we will have 
of the total enthaply of the 3 moles
so, to determine the 1 mole; we have:
= −2399.33 kJ
∴ the enthalpy change for 1.0 mole of NH₄NO₃ in this reaction = −2399.33 kJ
Depends if it desolved with the water or not
Answer:
Ok:
Explanation:
So, you can use the Henderson-Hasselbalch equation for this:
pH = pKa + log(
) where A- is the conjugate base of the acid. In other words, A- is the deprotonated form and HA is the protonated.
We can solve that
1 = log(
) and so 10 = or 10HA = A-. For every 1 protonated form of adenosine (HA), there are 10 A-. So, the percent in the protonated form will be 1(1+10) or 1/11 which is close to 9 percent.
At the anode, half-cell oxidation occurs in a voltaic cell.
<h3>Voltaic Cell Principle</h3>
A voltaic cell generates electricity due to the Gibbs free energy of spontaneous redox processes occurring inside the cell, which is the basis for the voltaic cell's operating principle.
Two half-cells plus a salt bridge make up the voltaic cell. An electrolyte-immersed metallic electrode is present on each side of the cell. These two half-cells are wired together to form a connection to a voltmeter.
<h3>Voltaic Cell Parts</h3>
- Copper makes comprises the cathode of a photovoltaic cell. This electrode serves as the cell's positive terminal, where reduction takes place.
- Anode: Zink metal makes up this electrode. It creates the cell's negative electrode, where oxidation takes place.
- Oxidation and reduction are divided into two discrete parts in two half-cells.
- Salt Bridge: It contains the electrolytes needed to finish the circuit in the voltaic cell.
- The flow of electrons between the electrodes occurs via the external circuit.
Learn more about Voltaic cells here:-
brainly.com/question/27908270
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