Explanation:
Information Technology CBSE Code 402 for class IX and X is based on National Skills Qualifications Framework. The book is designed and structured to help learner acquire the knowledge and skills regarding conputers, office productivity tools and internet necessary in real life competitive worlf
Answer:
Some methods of controlling soil erosion.
1) Planting Vegetation. This method involves planting crops with deep roots that can hold the soil in place. ...
2)Contour Farming. ...
3)Applying Mulches. ...
4)Avoiding Overgrazing. ...
5)Reforestation. ...
6)Use Plastic Sheeting. ...
7)Applying Terraseeding Method
The relationship between pH and pKa of buffer solution in given atomic view:
In figure I pH= pKa ( since [HA] =[A-] )
In figure II pH > pKa ( since [A-] > [HA] )
In figure III pH < pKa ( since [A-] < [HA] )
The pH and pKa are related by the Henderson-Hasselbalch equation. It should not be used for concentrated solutions, extremely low pH acids, or extremely high pH bases because it is simply an approximation.
pH = pKa + log(conjugate base/weak acid).
pH equals pKa plus log ([A-] / [HA]).
pH is determined by dividing the weak acid concentration by the log of the conjugate base concentration and the pKa value.
About halfway to the equivalence point:
pH = pKa
It's important to note that this equation is familiar with the connection because it is sometimes written for the Ka value rather than the pKa value.
pKa = – log Ka
Hence, value of pH depend on relative concentration of [A-] and HA]
To know more about Ka.
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Let's say say there are n1 mols of helium in the first balloon and n2 mols of nitrogen in the second one, which are equivalent to m1 grams of helium and m2 grams of nitrogen.
The molar mass of hydrogen is thus M1=m1/n1, same for nitrogen M2=m2/n2 hence the ratio of their masses is m1/m2=(M1n1)/(M2n2). Since both gases are rather similar, we can assume that n1~n2 hence m1/m2=M1/M2
Variations in the solar resource are probably the first and main consideration. You can use local weather stations where available, otherwise satellite data (eg from NASA's website) or commercial databases such as Meteonorm. Also there is quite a comprehensive set of data files in the SAM software
Other important considerations are
local environment: plants and animals that could be affected by the system; community support and buy-in.wind, hail, rain, snow profile for the location in question. if there are high/tropical winds then it will increase the plant cost.flight paths and roads near the plant which could be affected by glint and glareproximity to a local town where staff will be able to live both during construction and later during operationproximity to a electricity transmission line with available capacityavailability of water for mirror cleaning and steam blowdown.cost (and availability) of electricity in the area. If remote, electricity/energy may be very expensive, which will enable a high price for electricity sold from the plant.quality of road to the plant, required to bring equipment and materials to sitepolitical stability of the region -- potential impact on perceived bankability of the project.
Many of these items will have a large influence on the cost of the plant and/or the revenue it will generate during its life. Others relate to environmental and risk factors and are also critically important to consider.
Hope this helps!!
