Answer:
cheaper foods are usually more processed and unhealthy, therefore, poorer people are likelier to be obese.
Explanation:
Answer:
Mass = 32.69 g
Explanation:
Given data:
Mass of copper = 32 g
Mass of zinc formed = ?
Solution:
Chemical equation:
Cu + Zn(NO₃)₂ → Cu(NO₃)₂ + Zn
Number of moles of copper:
Number of moles = mass/molar mass
Number of moles = 32 g/ 63.55 g/mol
Number of moles = 0.5 mol
now we will compare the moles of zinc with copper.
Cu : Zn
1 : 1
0.5 : 0.5
Mass of Zn:
Mass = number of moles × molar mass
Mass = 0.5 mol × 65.38 g/mol
Mass = 32.69 g
Answer:
First, balance the half-reactions
Second, equalize the electrons
Third,add two reaction equations to get final answer
Explanation:
For example
H₂C₂0₄ + MnO⁻₄ ---------->CO₂+Mn²⁺
(i) Balancing the half reactions
H₂C₂O₄-------->2CO₂+2H⁺+2e⁻
5e⁻ +8H⁺+MnO₄⁻----------->Mn²⁺+4H₂O
(ii)
Equalizing the electrons
5H₂C₂O₄--------->10CO₂+10H⁺+10e⁻ ---here there is a factor of 5
10e⁻+16H⁺+2MnO₄⁻--------->2Mn²⁺+8H₂O -----here there is a factor of 2
(iii)
Add the two where electrons and some Hydrogen ions will cancel out
5H₂C₂O₄+6H⁺+2MnO₄⁻---->10CO₂+2Mn²⁺+8H₂O
Answer:
Iron is being oxidized at the anode and water is acting as the electrolyte.
Explanation:
When iron is exposed to oxygen and water , the rusting of iron takes place.
<u>The reaction taking place at anode : Oxidation of iron.</u>
The reaction taking place at cathode : Reduction of oxygen in the air.
The overall reaction:
The rust that is hydrated iron(III) oxide can form iron(II) ions which can react further with oxygen.
Thus, from the above reactions ,
Iron is being oxidized at the anode and water is acting as the electrolyte.
