Answer:
Explanation:
Moles of SO₃ = 0.760 mol
Volume = 1.50 L
[SO₃] = 0.5067 M
Considering the ICE table for the equilibrium as:
Given:
Equilibrium concentration of O₂ = 0.130 mol
Volume = 1.50 L
[O₂] = x = 0.0867 M
[SO₂] = 2x = 0.1733 M
[SO₃] = 0.5067-2x = 0.3334 M
The expression for the equilibrium constant is:
![K_c=\frac {[SO_2]^2[O_2]}{[SO_3]^2}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%20%7B%5BSO_2%5D%5E2%5BO_2%5D%7D%7B%5BSO_3%5D%5E2%7D)
Density is defined as mass/volume, and the volume is 36.2-25 mL
so just substitute into the equation to get the answer.
Hope this helps.
Answer:
100gmol⁻¹
Explanation:
Problem: To calculate the molecular mass of
KHCO₃
Solution
The molar mass of a substance is defined as the number of grams per mole of that substance.
To determine the molar mass of this compound we find:
> the component atomic masses
>we express it in gmol⁻¹
From the periodic table, the atomic masses of the elements in the given compound are:
K = 39g
H = 1g
C = 12g
O = 16g
Now let's add these numbers together:
KHCO₃ = [39 + 1 + 12 + (16x3)]
= 39 +13 +48
= 100g
Molar mass of KHCO₃ = 100gmol⁻¹
Answer:
B mixture can be separated by physical means
