Why is nitrogen fixation such an important step in the nitrogen cycle?
2 answers:
<u>Answer:</u> The correct answer is plants can't use nitrogen in the form of
<u>Explanation:</u>
Nitrogen fixation is carried out by a variety of bacteria. These can act as free-living organisms or in symbiotic relation with plants.
Nitrogen fixation is the process in which organisms convert nitrogen in the soil to ammonia which is taken up by the plants. This process is the main source of the nitrogen in the soil which is required by the plants to grow.
Therefore, nitrogen fixation is one of the most important processes on Earth.
Hence, the correct answer is plants can't use nitrogen in the form of
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Answer:
Mass of hydrogen gas evolved is 0.0749 grams.
Explanation:
Total pressure of the gases = p = 758 mmHg
Vapor pressure of water = 23.78 mmHg
Pressure of hydrogen gas ,P = p - 23.78 mmHg = 758 mmHg - 23.78 mmHg
P = 734.22 mmHg =
Temperature of of hydrogen gas ,T= 25°C =298.15 K
Volume of hydrogen gas = V = 0.949 L
Moles of hydrogen gas =n
PV = nRT (Ideal gas equation )
n = 0.03745 mol
Moles of hydrogen gas = 0.03745 mol
Mass of 0.03745 moles of hydrogen gas = 0.03745 mol × 2 g/mol = 0.0749 g
Mass of hydrogen gas evolved is 0.0749 grams.