Answer:
Check the explanation
Explanation:
Energy alance of 2 closed systems: Heat from CO2 equals the heat that is added to air in
![m_{a} c_{v,a}(T_{eq} -T_{a,i)} =m_{co2} c_{v,co2} (T_{co2,i} -T_{eq)}](https://tex.z-dn.net/?f=m_%7Ba%7D%20c_%7Bv%2Ca%7D%28T_%7Beq%7D%20-T_%7Ba%2Ci%29%7D%20%3Dm_%7Bco2%7D%20c_%7Bv%2Cco2%7D%20%28T_%7Bco2%2Ci%7D%20-T_%7Beq%29%7D)
1x0.723x
=3x0.780x
⇒
= 426.4 °K
The initail volumes of the gases can be determined by the ideal gas equation of state,
=
= 0.201![m^{3}](https://tex.z-dn.net/?f=m%5E%7B3%7D)
The equilibrium pressure of the gases can also be obtained by the ideal gas equation
![P_{eq=\frac{(m_{a}R_{a}T_{eq})+(m_{a}R_{a}T_{eq} ) }{(V_{a,eq}+V_{CO2,eq)} } =\frac{(m_{a}R_{a}T_{eq})+(m_{a}R_{a}T_{eq} ) }{(V_{a,i}+V_{CO2,i)} }](https://tex.z-dn.net/?f=P_%7Beq%3D%5Cfrac%7B%28m_%7Ba%7DR_%7Ba%7DT_%7Beq%7D%29%2B%28m_%7Ba%7DR_%7Ba%7DT_%7Beq%7D%20%29%20%7D%7B%28V_%7Ba%2Ceq%7D%2BV_%7BCO2%2Ceq%29%7D%20%7D%20%3D%5Cfrac%7B%28m_%7Ba%7DR_%7Ba%7DT_%7Beq%7D%29%2B%28m_%7Ba%7DR_%7Ba%7DT_%7Beq%7D%20%29%20%7D%7B%28V_%7Ba%2Ci%7D%2BV_%7BCO2%2Ci%29%7D%20%7D)
= 1x(8.314 28.97)x426.4+3x(8.314 44)x426.4
(0.201+1.275)
= 246.67 KPa = 2.47 bar
Answer:
a. 0.4544 N
b. ![5.112 \times 10^{-5 M}](https://tex.z-dn.net/?f=5.112%20%5Ctimes%2010%5E%7B-5%20M%7D)
Explanation:
For computing the normality and molarity of the acid solution first we need to do the following calculations
The balanced reaction
![H_2SO_4 + 2NaOH = Na_2SO_4 + 2H_2O](https://tex.z-dn.net/?f=H_2SO_4%20%2B%202NaOH%20%3D%20Na_2SO_4%20%2B%202H_2O)
![NaOH\ Mass = Normality \times equivalent\ weight \times\ volume](https://tex.z-dn.net/?f=NaOH%5C%20Mass%20%3D%20Normality%20%5Ctimes%20equivalent%5C%20weight%20%5Ctimes%5C%20volume)
![= 0.3200 \times 40 g \times 21.30 mL \times 1L/1000mL](https://tex.z-dn.net/?f=%3D%200.3200%20%5Ctimes%2040%20g%20%5Ctimes%2021.30%20mL%20%5Ctimes%20%201L%2F1000mL)
= 0.27264 g
![NaOH\ mass = \frac{mass}{molecular\ weight}](https://tex.z-dn.net/?f=NaOH%5C%20mass%20%3D%20%5Cfrac%7Bmass%7D%7Bmolecular%5C%20weight%7D)
![= \frac{0.27264\ g}{40g/mol}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B0.27264%5C%20g%7D%7B40g%2Fmol%7D)
= 0.006816 mol
Now
Moles of
needed is
![= \frac{0.006816}{2}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B0.006816%7D%7B2%7D)
= 0.003408 mol
![Mass\ of\ H_2SO_4 = moles \times molecular\ weight](https://tex.z-dn.net/?f=Mass%5C%20of%5C%20H_2SO_4%20%3D%20moles%20%5Ctimes%20molecular%5C%20weight)
![= 0.003408\ mol \times 98g/mol](https://tex.z-dn.net/?f=%3D%200.003408%5C%20mol%20%5Ctimes%2098g%2Fmol)
= 0.333984 g
Now based on the above calculation
a. Normality of acid is
![= \frac{acid\ mass}{equivalent\ weight \times volume}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7Bacid%5C%20mass%7D%7Bequivalent%5C%20weight%20%5Ctimes%20volume%7D)
![= \frac{0.333984 g}{49 \times 0.015}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B0.333984%20g%7D%7B49%20%5Ctimes%200.015%7D)
= 0.4544 N
b. And, the acid solution molarity is
![= \frac{moles}{Volume}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7Bmoles%7D%7BVolume%7D)
![= \frac{0.003408 mol}{15\ mL \times 1L/1000\ mL}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B0.003408%20mol%7D%7B15%5C%20mL%20%5Ctimes%20%201L%2F1000%5C%20mL%7D)
= 0.00005112
=![5.112 \times 10^{-5 M}](https://tex.z-dn.net/?f=5.112%20%5Ctimes%2010%5E%7B-5%20M%7D)
We simply applied the above formulas
Answer:
2.5=1500/Whp=> Whp=600 kWh
delWgain=1500-600=900 kWh
Money saved= 900* 6tk*=5400 tk
Answer:
F=1.47 KN
Explanation:
Given that
Diameter of plate = 25 cm
Height of pool h = 3 m
We know that force can be given as
F= P x A
P=ρ x g x h
Now by putting the values
P=1000 x 10 x 3
P= 30 KPa
![A=\dfrac{\pi}{4}\times 0.25^2\ m^2](https://tex.z-dn.net/?f=A%3D%5Cdfrac%7B%5Cpi%7D%7B4%7D%5Ctimes%200.25%5E2%5C%20m%5E2)
![A=0.049\ m^2](https://tex.z-dn.net/?f=A%3D0.049%5C%20m%5E2)
F= 30 x 0.049 KN
F=1.47 KN
So the force on the plate will be 1.47 KN.