Answer:
Explanation:
The molar volume of a gas at STP (Standard Temperature and Pressure), which is equal to 22.4 liters.
There are 6.02x10^23 molecules in 1 mole of Argon.
So for 1.51x10^24 molecules of Argon, the volume at STP should be
(1.51x10^24 / (6.02x10^23)) * 22.4
= 56.19 liters
Since gas molecules average velocity depends on temperature, oxygen molecules at 25°C are moving faster than oxygen molecules at 0 °C.
According to the kinetic theory of gases, the molecules of a gas are in constant random motion and collide frequently with each other and the walls of the container.
The average speed of gas molecules depends on temperature and molar mass as shown by the relation;
vrms = √3RT/M
The following statement are true among the options provided;
- Oxygen molecules at 25°C are moving faster than oxygen molecules at 0 °C
- Gases exert pressure by colliding with container walls
The following are false among the options provided;
- All hydrogen molecules are moving with the same velocity
- Nitrogen gas exerts more pressure than hydrogen gas because nitrogen molecules are heavier than hydrogen molecules.
- Nitrogen molecules remain suspended in the atmosphere because they are not attracted to Earth by gravitational forces.
Learn more: brainly.com/question/6505878
Answer:
c. CH₃COO⁻
Explanation:
The task is not very clear but I think this is the original question.
<em>Identify the conjugate base of CH₃COOH in the reaction:
</em>
<em>CH₃COOH + HSO₄⁻ ⇄ H₂SO₄ + CH₃COO⁻
</em>
<em>a. HSO₄⁻
</em>
<em>b. SO₄²⁻
</em>
<em>c. CH₃COO⁻</em>
<em>d. H₂SO₄</em>
<em>e. OH⁻</em>
Let's consider the following reaction
CH₃COOH + HSO₄⁻ ⇄ H₂SO₄ + CH₃COO⁻
According to the Bronsted-Lowry acid-base theory, an acid is a species that donates H⁺ and a base is a species that accepts H⁺.
CH₃COOH is an acid because it donates H⁺ to HSO₄⁻, whereas CH₃COO⁻ is its conjugate base, because it accepts H⁺ from H₂SO₄ to form CH₃COOH.
Another acid-base pair is H₂SO₄/HSO₄⁻
Answer:
When 45 gram of total mass of reactant react 45 gram of product will also produced
Explanation:
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
For example:
In given photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.
In a similar way,
2Na + 2H₂O → 2NaOH + H₂
45 g = 45 g
when 45 gram of total mass of reactant react 45 gram of product will also produced. (2NaOH + H₂ = 45 g)