Answer:
1.23 atm
Explanation:
Given data
- Initial pressure (P₁): 1.0 atm
- Initial volume (V₁): 750 mL
- Final pressure (P₂): to be calculated
- Final volume (V₂): 610 mL
For a gas sample, <em>there is an inverse relationship between the pressure and the volume</em>, that is, when the pressure is increased, the volume decreases. Mathematically, for an ideal gas at constant temperature, we can find the final pressure using Boyle's law.
Answer: The average atomic mass of this element is 131.5 amu
Explanation:
Mass of isotope 1 = 131.90 amu
% abundance of isotope 1 = 90% =
Mass of isotope 2 = 127.90 amu
% abundance of isotope 2 = 10% =
Formula used for average atomic mass of an element :
The average atomic mass of this element is 131.5 amu
Answer is: there are 216 moles od water.
Chemical reaction: 2H₂ + O₂ → 2H₂O.
n(H₂) = 226 mol.
n(O₂) = 108 mol; limiting reactant.
From chemical reaction: n(O₂) : n(H₂O) = 1 : 2.
n(H₂O) = 2 · n(O₂).
n(H₂O) = 2 · 108 mol.
n(H₂O) = 216 mol.
n - amount of substance.