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3 years ago

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Why should we conserve biodiversity

1 answer:

irga5000 [103]3 years ago

8 0

Biodiversity conservation protects plant, animal, microbial and genetic resources for food production, agriculture, and ecosystem functions such as fertilizing the soil, recycling nutrients, regulating pests and disease, controlling erosion, and pollinating crops and trees.

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A 1.78-m3 rigid tank contains steam at 220°C. One-third of the volume is in the liquid phase and the rest is in the vapor form.

mafiozo [28]

Answer:

a) P = 2319.6[kPa]; b) 2.6%

Explanation:

Since the problem data is not complete, the following information is entered:

A 1.78-m3 rigid tank contains steam at 220°C. One-third of the volume is in the liquid phase and the rest is in the vapor form. Determine (a) the pressure of the steam, and (b) the quality of the saturated mixture.

From the information provided in the problem we can say that you have a mixture of liquid and steam.

a) Using the steam tables we can see (attached image) that the saturation pressure at 220 °C is equal to:

$P_{sat} =2319.6[kPa]$

$v_{f}=0.001190[m^{3}/hr]\\v_{g}=0.08609[m^{3}/hr]\\$

b) Since the specific volume of the gas and liquid is known, we can find the mass of each phase using the following equation:

$m_{f}=\frac{V_{f} }{v_{f} } \\m_{g}=\frac{V_{g} }{v_{g} } \\where:\\V_{f}=volume of the fluid[m^3]\\v_{f}=specific volume of the fluid [m^3/kg]\\$

We know that the volume of the fluid is equal to:

$V_{f}=1/3*V_{total} \\V_{total}=1.78[m^3]\\$

Now we can find the mass of the gas and the liquid.

$m_{f}=\frac{1/3*1.78}{0.001190} \\m_{f}=498.6[kg]\\m_{g}=\frac{2/3*1.78}{0.08609}\\m_{g}=\ 13.78[kg]$

The total mass is the sum of both

$m_{total} =m_{g} + m_{fluid} \\m_{total} = 498.6 + 13.78\\m_{total} = 512.38[kg]$

The quality will be equal to:

$x = \frac{m_{g} }{m_{T} }\\ x= \frac{13.78}{512.38} \\x = 0.026 = 2.6%$

5 0

3 years ago

A mass of 80 g of KNO3 is dissolved in 100 g of water at 50 ºC. The solution is heated to 70ºC. How many more grams of potassium

slava [35]

Hi um i think its At 30 ° C your welcome

7 0

3 years ago

1. Although mercury is a metal, it is a liquid at room temperature. Mercury melts at about -39°C. If

grigory [225]

Answer:

I think so because if it starts at a low temperature for that material, it should melt when you bring it up to that temperature.

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3 years ago

Who was the fist man on moon

laila [671]

Answer:

Neil Armstrong

Explanation:

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sergey [27]

100 cm is 1 meter. So your answer would be 0.362 meters.

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3 years ago

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