. The formula for methane is CH4. There are 8 total valence electrons - 1 each for the hydrogen atoms, and 4 for the carbon atom. There are four single bonds, and no lone electron pairs in the methane molecule. With 8 valence electrons and 4 single bonds, we get 8/4=2 electrons per bond.
<span>2. The methane molecule contains four single, or sigma, bonds. Each sigma bond is formed between the 1s orbital of a hydrogen atom, which contains one electron, and one of the four hybrid sp3 orbitals of the carbon atom, each of which contains one electron. That gives us 2 electrons per bond.
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Because its so far, and the only telescope we had to see the planets stopped working.
The kinetic energy of the crate as it reaches the lower surface is 80 J
Kinetic energy is the energy possed by an object in motion. Mathematically, the kinetic energy can be expressed as follow:
KE = ½mv²
With the above formula, the kinetic energy of the crate can be obtained as follow:
- Mass (m) = 10 Kg
- Velocity (v) = 4 m/s
- Kinetic energy (KE) =?
KE = ½mv²
KE = ½ × 10 × 4²
KE = 5 × 16
KE = 80 J
Therefore, the kinetic energy of the crate is 80 J
Learn more about kinetic energy: brainly.com/question/14449170
A rubbber band becomes warm when stretched repeatedly because it stores its energy as thermal energy. When you stretch the rubber band again and again, this gives the rubber more thermal energy, causing it to heat up.
