Answer: 
and 
and 
and 
and 
Explanation:
According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.
For the given chemical equations:
1. 
Here, is loosing a proton, thus it is considered as an acid and after losing a proton, it forms which is a conjugate base.
2. 
Here, is loosing a proton, thus it is considered as an acid and after losing a proton, it forms 
which is a conjugate base.
3. 
Here, is loosing a proton, thus it is considered as an acid and after losing a proton, it forms which is a conjugate base.
4. 
and 
are not conjugate acid/ base pairs.
5. 
Here, is loosing a proton, thus it is considered as an acid and after losing a proton, it forms which is a conjugate base.
Explanation:
jrjrji8 que se ha dicho nada. pero si lo que se le puede dar un paseo de la ciudad, y el 5 que se le puede pasar por alto
Answer:
Mn^2+(aq) + 4H2O(l) + 5[VO2]^+(aq) + 10H^+(aq) ---------->MnO4^-(aq) + 8H^+(aq) + 5[VO]^2+(aq) + 5H2O(l)
Explanation:
Oxidation half equation:
Mn^2+(aq) + 4H2O(l) ------------> MnO4^-(aq) + 8H^+(aq) + 5e
Reduction half equation:
5[VO2]^+(aq) + 10H^+(aq) + 5e --------> 5[VO]^2+(aq) + 5H2O(l)
Overall redox reaction equation:
Mn^2+(aq) + 4H2O(l) + 5[VO2]^+(aq) + 10H^+(aq) ---------->MnO4^-(aq) + 8H^+(aq) + 5[VO]^2+(aq) + 5H2O(l)
Answer:
Chemical change
Explanation:
The rusting of iron/a nail is a chemical change
Iron (Fe) and Oxygen (O) combine to create the compound Iron Oxide (Fe2O3), which is rust.
The heat absorbed to raise temperature : Q = 31350 J
<h3>Further explanation
</h3>
Given
m = mass = 150 g
Δt = Temperature difference : 50 °C
Required
Heat absorbed
Solution
Heat can be formulated
<em>
Q = m.c.Δt
</em>
The specific heat of water = c = 4.18 J/g °C
Input the value :
Q = 150 x 4.18 x 50
Q = 31350 J
