Which is the correct Lewis structure for acetylene (C2H2)?
2 answers:
Explanation :
Lewis-dot structure : Lewis-dot structure shows the bonding between the atoms of a molecule. It also shows the number of paired and unpaired electrons present in the molecule.
The given molecule is, Acetylene
As we know that carbon has '4' valence electrons and hydrogen has '1' valence electron.
Therefore, the total number of valence electrons in acetylene, = 2(4) +2(1) = 10
According to Lewis-dot structure, there are 10 number of bonding electrons and 0 number of non-bonding electrons.
The Lewis-dot structure of acetylene is shown below.
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<h3>Answer:</h3>
3.5 Newton
<h3>Explanation:</h3>We are given;
Mass of the ball = 140 g
Acceleration = 25 m/s²
Required to find the force;
- According to Newton's second law of motion, the resultant force on a body in motion and the rate of change in linear momentum are directly proportional.
- That is;
- Thus; F = ma , where F is the resultant force, m is the mass and a is the acceleration.
To get the force we substitute the value of m and a in the formula;
Therefore;
F = 0.14 kg × 25 m/s²
= 3.5 N
Hence, the force needed to accelerate the ball is 3.5 N