B, E, F have 3 significant figures
The chemical change that involves breaking down substances using electricity is C. Electrolysis.
<h2>Let us solve for it </h2>
Explanation:
Energy
It is ability to do work .
There are so many forms of energy .
out of which mechanical energy is also one of the form .
Mechanical energy
It is the energy possessed by the body by virtue of its motion and state .
It is of two types :
- Kinetic energy
- Potential energy
Kinetic energy
It is the energy possessed by the body by virtue of its motion .
Its expression is :
K.E=1/2mv²
Here in above question it is given that :
mass = 2Kg
V=10m/sec
K.E will be = 1/2 x 2 x 10 x 10
K.E=100 J
Answer:

Explanation:
We will need a balanced chemical equation with masses, moles, and molar masses.
1. Gather all the information in one place:
M_r: 2.016 17.03
3H₂ + N₂ ⟶ 2NH₃
m/g: 6.33 × 10⁻⁴
2. Calculate the moles of H₂

3. Calculate the moles of NH₃
The molar ratio is 2 mol NH₃/3 mol H₂.

4. Calculate the molecules of NH₃
There are 6.022 × 10²³ molecules of NH₃/1 mol NH₃.
