Hi!
When Silver Oxide (Ag20) is heated, it decomposes into Silver and Oxygen.
Answer:
The mass of oxygen is 12.10 g.
Explanation:
The decomposition reaction of potassium chlorate is the following:
2KClO₃(s) → 2KCl(s) + 3O₂(g)
We need to find the number of moles of KClO₃:
![\eta_{KClO_{3}} = \frac{m}{M}](https://tex.z-dn.net/?f=%20%5Ceta_%7BKClO_%7B3%7D%7D%20%3D%20%5Cfrac%7Bm%7D%7BM%7D%20)
Where:
m: is the mass = 30.86 g
M: is the molar mass = 122.55 g/mol
Now, we can find the number of moles of O₂ knowing that the ratio between KClO₃ and O₂ is 2:3
Finally, the mass of O₂ is:
![m = 0.378 moles*32 g/mol = 12.10 g](https://tex.z-dn.net/?f=%20m%20%3D%200.378%20moles%2A32%20g%2Fmol%20%3D%2012.10%20g%20)
Therefore, the mass of oxygen is 12.10 g.
I hope it helps you!
Answer:
A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is
.
Biochemical functions of carbohydrates: Carbohydrates provide Stored Energy, Carbohydrates help to preserve Muscle and promote digestive health and Carbohydrates build macromolecules
Explanation:
A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is
.
Biochemical functions of carbohydrates:
1. Carbohydrates provide Stored Energy.
2. Carbohydrates help to preserve Muscle and promote digestive health.
3. Carbohydrates build macromolecules
Explanation:
As per Brønsted-Lowry concept of acids and bases, chemical species which donate proton are called Brønsted-Lowry acids.
The chemical species which accept proton are called Brønsted-Lowry base.
(a) ![HNO_3 + H_2O \rightarrow H_3O^+ + NO_3^-](https://tex.z-dn.net/?f=HNO_3%20%2B%20H_2O%20%5Crightarrow%20H_3O%5E%2B%20%2B%20NO_3%5E-)
is Bronsted lowry acid and
is its conjugate base.
is Bronsted lowry base and
is its conjugate acid.
(b)
![CN^- + H_2O \rightarrow HCN + OH^-](https://tex.z-dn.net/?f=CN%5E-%20%2B%20H_2O%20%5Crightarrow%20HCN%20%2B%20OH%5E-)
is Bronsted lowry base and HCN is its conjugate acid.
is Bronsted lowry acid and
is its conjugate base.
(c)
![H_2SO_4 + Cl^- \rightarrow HCl + HSO_4^-](https://tex.z-dn.net/?f=H_2SO_4%20%2B%20Cl%5E-%20%5Crightarrow%20HCl%20%2B%20HSO_4%5E-)
is Bronsted lowry acid and
is its conjugate base.
Cl^- is Bronsted lowry base and HCl is its conjugate acid.
(d)
![HSO_4^-+OH^- \rightarrow SO_4^{2-}+H_2O](https://tex.z-dn.net/?f=HSO_4%5E-%2BOH%5E-%20%5Crightarrow%20SO_4%5E%7B2-%7D%2BH_2O)
is Bronsted lowry acid and
is its conjugate base.
OH^- is Bronsted lowry base and
is its conjugate acid.
(e)
![O_{2-}+H_2O \rightarrow 2OH^-](https://tex.z-dn.net/?f=O_%7B2-%7D%2BH_2O%20%5Crightarrow%202OH%5E-)
is Bronsted lowry base and OH- is its conjugate acid.
is Bronsted lowry acid and OH- is its conjugate base.