Answer:
(a). Biological fixation
(b). Fixation by lightning
Explanation:
Gaseous nitrogen in the atmosphere has to be converted or "fixed" into a suitable form before it can be utilised by living organisms.
There two main ways of nitrogen fixation are
(a). Biological fixation: Majority (approximately 90%) of nitrogen fixation is carried out by bacteria. Bacterias such as Cyanobacteria transforms nitrogen into ammonium and ammonia : N2 + 3 H2 → 2 NH3. The produced ammonia can then be taken in directly by plants and /or the conversion products of ammonium and ammonia may further react in the process of nitrification.
(b). Fixation by lightning: Lightning energy causes the combination nitrogen (N2) and water (H2O) forming nitrates (NO3) and ammonia (NH3) . Rain water dissolves the formed nitrates and ammonia and the solution is drained into the ground, where they can be reached by plants plant roots for consumption.
Answer:
The atomic radius <em>Decreases</em> as you move from left to right on the periodic table.
hope it helps!
Answer:
it is b
Explanation:
b is the quarks for a proton
Answer:
9.6 t
Explanation:
You want to convert tablets ⟶ tons
I would use the conversion sequence:
tablets ⟶ milligrams ⟶ grams ⟶ kilograms ⟶ pounds ⟶ tons
===============
1 tablet = 500 mg Convert tablets to milligrams
Milligrams = 85 × 10⁶ × 500/1
Milligrams = 4.25 × 10¹⁰ mg
===============
1000 mg = 1 g Convert milligrams to grams
Grams = 4.25 × 10¹⁰ × 1/1000
Grams = 4.25 × 10⁷ g
===============
1000 g = 1 kg Convert grams to kilograms
Kilograms = 4.25 × 10⁷ ×1/1000
Kilograms = 4.25 × 10⁴ kg
===============
I kg = 2.205 lb Convert kilograms to pounds
Pounds = 4.25 × 10⁴ × 1/2.205
Pounds = 1.93 × 10⁴ lb
===============
1 t = 2000 lb Convert pounds to tons
Tons = 1.93 × 10⁴ × 1/2000
Tons = 9.6 t