Answer:
A) 31.22
Explanation:
The reaction of sulfuric acid with NaOH is:
H₂SO₄ + 2 NaOH → Na₂SO₄ + 2H₂O
To solve this problem we need to determine the moles of acid that will react, and, using the chemical equation we can determine the moles of NaOH and the volume that a 0.2389M NaOH solution would require to neutralize it.
<em>Moles H₂SO₄ (Molar mass: 98.08g/mol):</em>
0.9368g * 39.04% = 0.3657g H₂SO₄ * (1mol / 98.08g) =
3.7289x10⁻³moles H₂SO₄
And moles of NaOH that you require to neutralize the acid are:
3.7289x10⁻³moles H₂SO₄ * (2 moles NaOH / 1 mole H₂SO₄) =
7.4578x10⁻³ moles NaOH
Using a 0.2389M NaOH solution:
7.4578x10⁻³ moles NaOH * (1L / 0.2389mol) = 0.03122L = 31.22mL
Right answer is:
<h3>A) 31.22
</h3>
Heat death refers to the 2nd law of thermodynamics which states that entropy trends increases in an isolated system. Thus hypothesized that the universe would last for an amount of time enough until it reaches a state that all energy is equally distributed.
We have two laws that cannot be violated. The conservation of mass and the conservation of energy.
The only reason why the beaker with the products has less mass than what you could expect is because part of the products are gases that escapes from the beaker.
Regarding the energy, the lower energy of the products is due to the release of heat during the chemical reaction.
The partial pressure of oxygen in the alveoli is about 104 mm Hg, while the partial pressure of carbon dioxide in the alveoli is 40 mm Hg.
<h3>What is the partial pressure of gases in the alveoli?</h3>
The alveoli are tiny air sacs where gaseous exchange takes place between the lung and the bloodstream.
Because oxygen needs to diffuse into the bloodstream while carbon dioxide needs to diffuse out, the partial pressure of oxygen in the alveoli is around 104 mmHg while that of carbon dioxide is 40 mmHg.
With higher partial pressure than in the blood, oxygen from the alveoli will be able to diffuse into the blood. With lower partial pressure than in the blood, carbon dioxide will be able to diffuse from the blood into the alveoli.
More on the partial pressure of gases in the alveoli can be found here: brainly.com/question/14170500
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