4KO₂ + 2CO₂ → 2K₂CO₃ + 3 O₂
The two chemicals that have a molar ratio of 3:4 is in equation above O₂ and KO₂
<em><u>explanation</u></em>
The molar ratio is the ratio between the amount in moles of two compounds that are involved in a chemical reaction.
In the equation above the mole ratio is determined by examining coefficient ( <em>number in front of the formula</em>)
the coefficient of O₂ is 3 while that of KO₂ is 4 therefore the mole ratio of O₂:KO₂ is 3:4
Answer:
Leeunwenhoek
Explanation:
Anton Von Leeunwenhoek was the first scientist to observe live cells and in greater details. He described spirogyra in the mid 15th century.
- His contribution to the scientist community opened up the world of micro-organisms.
- He produced several microscopes to observed the world of micro-organisms that we cannot see with our naked eyes.
- He also studied plants extensively.
The molar mass of C2F4 (tetrafluoroethylene) is equal to 100 g/mol. The number of moles of C2F4 in the given amount,
n = (5.85 g) / (100 g/mol) = 0.0585 mols C2F4
The number of molecules per mol is calculated through the equation,
(0.0585 mols) x (6.022 x 10^23)
Since there are 4 F atoms each molecule then,
(0.0585 mols) x (6.022 x 10^23)(4)
= 1.41 x 10^23 atoms of F
The answer is option E. perfectly elastic collisions.
Let's review each option.
A) constant volume of molecules: No because the volume of the molecules changes with temperature and pressure, as we all know.
B), C) and D) may be analyzed using Kinetic Theory of Gases.
Kinetic Theory of Gases claims that molecules of gases do not interact with each other, this is there are not intermolecular forces of attraction or repulsion. Also Kinetic Theory of Gases claims that collisions in ideal gases are almost perfectly elastic collisions.
Elastic collisions are those where there is no loss (nor gain) of energy during the collision.
So, you see that Kinetic Theory of Gases support option E and rejects options B, C and D.