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What is difference between the net nitrogen mineralization rate and the gross nitrogen mineralization rate?
Gross: total nitrogen transformed form organic to mineral form in soil over a period of time Net = Gross - the ammount re-taken up by microbes during the same period of time Net is a measure of "plant available" mineral nitrogen production.
What is the method to calculate the percent nitrogen in these common fertilizers?
To calculate the percent nitrogen in common fertilizers, you can use the formula: Nitrogen (Amount of Nitrogen in fertilizer / Total weight of fertilizer) x 100. This formula helps determine the nitrogen content in the fertilizer, which is important for plant growth and health.
Where is the largest concentration of nitrogen found?
The largest concentration of nitrogen can be found in Earth's atmosphere, where it makes up about 78% of the total volume of air. Nitrogen is an essential element for living organisms and is also found in the soil and in many organic compounds.
A sample of nitrogen gas is collected over water at 20 degrees Celsius. The vapor pressure of water at 20 degrees Celsius is 18 mmHg. What is the partial pressure of the nitrogen if the total pressure?
The total pressure is the sum of the partial pressure of nitrogen and the vapor pressure of water. Therefore, the partial pressure of nitrogen is the total pressure minus the vapor pressure of water. Given that the total pressure is not provided in the question, we need more information to calculate the partial pressure of nitrogen.
Why HCl is used in Kjeldahl method?
HCl is used in the Kjeldahl method to help digest the organic material by converting nitrogen in the sample to ammonium chloride, making it easier to measure the total nitrogen content. Additionally, HCl helps to prevent interference from non-nitrogenous compounds during the digestion process.
Do you calculate total organic nitrogen by adding nitrate nitrogen and nitrite nitrogen?
No, total organic nitrogen is measured separately from nitrate and nitrite nitrogen. To calculate total organic nitrogen, you need to measure the concentration of organic nitrogen compounds in a sample, which can include amino acids, proteins, and other organic nitrogen-containing compounds. Nitrate and nitrite nitrogen represent inorganic nitrogen species and are typically measured separately.
How do you calculate total nitrogen?
To calculate total nitrogen, you typically sum up the concentrations of different forms of nitrogen present in a sample. This can include organic nitrogen, ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen. Analytical techniques such as Kjeldahl digestion or combustion methods are commonly used to determine total nitrogen content in a sample.
How do you calculate non-protein calories to nitrogen ratio?
divide the total grams of protein by 6.25 to find out gm of nitrogen. Calculate the total number of non protein calorie. Divide the total # of NPC by gm of nitrogen will bw the answer.
What is difference between the net nitrogen mineralization rate and the gross nitrogen mineralization rate?
Gross: total nitrogen transformed form organic to mineral form in soil over a period of time Net = Gross - the ammount re-taken up by microbes during the same period of time Net is a measure of "plant available" mineral nitrogen production.
What is the method to calculate the percent nitrogen in these common fertilizers?
To calculate the percent nitrogen in common fertilizers, you can use the formula: Nitrogen (Amount of Nitrogen in fertilizer / Total weight of fertilizer) x 100. This formula helps determine the nitrogen content in the fertilizer, which is important for plant growth and health.
How many grams of nitrogen are contained in 2500 kcal diet that provides 15 percent of the energy as protein?
To calculate the amount of nitrogen in a diet, you typically assume that 16% of protein is nitrogen. In this case, if 15% of the energy in the diet comes from protein, you can calculate the total protein in the diet (2500 kcal * 0.15 = 375 kcal from protein). Then, convert this to grams of protein using the fact that protein provides 4 kcal/g. Finally, since protein is about 16% nitrogen, you can calculate the total grams of nitrogen in the diet.
What is the nonprotein calorie to nitrogen ratio of a patient receiving TPN consisting of the following parentral nutrition solution 500ml 30 dextrose 500ml 20lipid 500ml 8.5 amino acid?
Calorie to nitrogen ratio= Kcals per day/gram nitrogen per day To find out nitrogen gms= protein in gms/ 6.25 500 ml of 8.5 amino acid has 42.5gms protein that divided by 6.25= 6.8 gms The calories from dextrose and lipids have 1000 and 510 calories respectively Now divide 1510 non protein calories/ 6.8 =222 Hope this helps
Where is the largest concentration of nitrogen found?
The largest concentration of nitrogen can be found in Earth's atmosphere, where it makes up about 78% of the total volume of air. Nitrogen is an essential element for living organisms and is also found in the soil and in many organic compounds.
A sample of nitrogen gas is collected over water at 20 degrees Celsius. The vapor pressure of water at 20 degrees Celsius is 18 mmHg. What is the partial pressure of the nitrogen if the total pressure?
The total pressure is the sum of the partial pressure of nitrogen and the vapor pressure of water. Therefore, the partial pressure of nitrogen is the total pressure minus the vapor pressure of water. Given that the total pressure is not provided in the question, we need more information to calculate the partial pressure of nitrogen.
If atmosphere pressure on a certain day is 749 mm Hg what is the partial pressurre of nitrogen given that nitrogen is about 78 of the atmosphere?
To find the partial pressure of nitrogen, you first need to calculate the total pressure exerted by the atmosphere due to nitrogen. Since nitrogen makes up 78% of the atmosphere, you would multiply the total atmospheric pressure (749 mm Hg) by 0.78 to get the partial pressure of nitrogen, which would be 585.22 mm Hg.
Calculate the percent nitrogen by mass in chlorophyll C55H72MgN4O5?
You would first calculate the atomic mass of chlorophyll, which would be 892.9 g/mol (I did not calculate this out, but looked it up b/c of the complexity of the calculation). Then find the molar mass of the Nitrogen part of the chlorophyll (4 mol *14.01 g/mol=56.04 grams). Then, take 56.04 grams/892.9grams= .06276, or 6.276% nitrogen by mass
What is the total charge of two nitrogen anions?
The total charge of two nitrogen anions is -2. Nitrogen typically forms anions with a charge of -3, so two nitrogen anions would have a total charge of -6.
