Answer:
2 e⁻ + Cl₂(g) → 2 Cl⁻(aq)
Explanation:
Let's consider the following balanced redox equation.
2 I⁻(aq) + Cl₂(g) → 2 Cl⁻(aq) + I₂(aq)
We can identify 2 half-reactions:
Oxidation: 2 I⁻(aq) → I₂(aq) + 2 e⁻
Reduction: 2 e⁻ + Cl₂(g) → 2 Cl⁻(aq)
We can identify the second half-reaction as the reduction reaction because Cl₂ gains 2 electrons and its oxidation number decreases from 0 to 1-.
Answer:
1,100 km/h
Explanation:
Velocity = distance/time = 4,400 km / 4.0 h = 1,100 km/h
B) A nitrogen atom that has 5 valence electrons gains 3 more electrons to become a nitride (N3-)
Answer:
11.54 M
Explanation:
In this case, all we have to do is to apply the following expression:
M = n/V
M: molarity
n: moles
V: volume of solution in liters
In this case, we can assume that the volume of water will be the volume of solution. This is because the problem is not specifing if the moles of AgNO3 are liquid or solid, so we can make a safe assumption of the volume.
Using the expression above we have:
M = 5.54 / 0.48
M = 11.54 M
This is the molarity of solution
Answer:
<h2>3.156 × 10²² atoms</h2>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>3.156 × 10²² atoms</h3>
Hope this helps you
