Answer:
1370moles
Explanation:
Given parameters:
Number of molecules in methane = 8.25 x 10²⁶molecules
Unknown:
Number of moles of methane = ?
Solution:
A mole of any substance contains the Avogadro's number of particles which is 6.02 x 10²³molecules;
6.02 x 10²³ molecules is contained in 1 mole of a substance
8.25 x 10²⁶molecules of methane will contain = 1370moles
The pressure of a 5.00 L flask at 25˚ C that contains 0.200 mol of Cl2 is 0.98atm.
<h3>How to calculate pressure?</h3>
The pressure of a gas can be calculated by using the following expression:
PV = nRT
Where;
- P = pressure
- V = volume
- n = number of moles
- R = gas law constant
- T = temperature
P × 5 = 0.2 × 0.0821 × 298
5P = 4.893
P = 4.893 ÷ 5
P = 0.98atm
Therefore, the pressure of a 5.00 L flask at 25˚ C that contains 0.200 mol of Cl2 is 0.98atm.
Learn more about pressure at: brainly.com/question/356585
Answer:
35. boiling point 100 Celsius
36. seven
sorry i dont know 37 AND 38. :(
Explanation:
Molarity after dilution : 0.0058 M
<h3>Further explanation
</h3>
The number of moles before and after dilution is the same
The dilution formula
M₁V₁=M₂V₂
M₁ = Molarity of the solution before dilution
V₁ = volume of the solution before dilution
M₂ = Molarity of the solution after dilution
V₂ = Molarity volume of the solution after dilution
M₁=0.1 M
V₁=6.11
V₂=105.12
Fission is the process where nuclei:
Split to form smaller nuclei.
Fusion is the process where nuclei:
Combine to form larger nuclei.
A easy way to remember which is which is by remembering that to fuse two things together is to combine them to make a single entity, and fusion is the process of fusing nuclei together. And if you know that, then you will know that fission is the process of splitting nuclei.
Fusion: Combine
Fission: Split
I hope this helps. Let me know if you have any questions or if anything confuses you. :)