Answer:
Nitrogen is one of the major abundant gas in the atmosphere occupying 78% by volume.
It plays an important role in controlling the aquatic and terrestrial ecosystem. The presence of high amount of nitrogen in the atmosphere can lead to the release of large amount of pollutants that includes ammonia and ozone, which can cause difficulty in breathing, visibility problems and at the same time, it will also the affect the growth and expansion of plants. It also can damages to the forests, soils, and water.
The presence of extremely large amount of nitrogen gas in the aquatic ecosystem can also influence the growth of aquatic plants and algae. When these organisms are present in a large number then it blocks the water in-taking path of these plants. It eventually consumes the dissolved oxygen as soon as they decompose, as a result of which it does not allow the light to penetrate into the deeper water (zones).
Answer:
2.30 × 10⁻⁶ M
Explanation:
Step 1: Given data
Concentration of Mg²⁺ ([Mg²⁺]): 0.039 M
Solubility product constant of Mg(OH)₂ (Ksp): 2.06 × 10⁻¹³
Step 2: Write the reaction for the solution of Mg(OH)₂
Mg(OH)₂(s) ⇄ Mg²⁺(aq) + 2 OH⁻(aq)
Step 3: Calculate the minimum [OH⁻] required to trigger the precipitation of Mg²⁺ as Mg(OH)₂
We will use the following expression.
Ksp = 2.06 × 10⁻¹³ = [Mg²⁺] × [OH⁻]²
[OH⁻] = 2.30 × 10⁻⁶ M
Answer:
-14
Explanation:
You have to subtract 136 from 138 then subtract that from 12 & that is your low melting point.
Answer:
The mass of water = 97.28g
The molecular mass of water is
18.01528 g/mol
No of moles of water is 97.28/18.01528 = 5.3998
Approximately 5
Therefore, there are 5 molecules of water in 97.28g of water.
<u>Answer:</u> The ratio of number of hydroxide ions to iodide ions is 2 : 1.
<u>Explanation:</u>
The chemical equation for the oxidation of iodide ion is oxidized to hypoiodite ion by permanganate follows:
According to mole concept:
1 mole of a substance contains number of particles
Moles of iodide ions = 1 mole
Number of iodide ions =
Moles of hydroxide ions = 2 mole
Number of hydroxide ions =
Taking the ratio of number of hydroxide ions and number of iodide ions are as follows:
Hence, the ratio of number of hydroxide ions to iodide ions is 2 : 1.