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allsm [11]
3 years ago
13

The main difference between speed and velocity is that velocity includes this:

Chemistry
1 answer:
Leokris [45]3 years ago
3 0
<h3>Answer:</h3>

Direction

<h3>Explanation:</h3>

The question is testing on vector and scalar quantities.

What are vector quantities and scalar quantities?

  • Quantities with both magnitude and direction are known as vector quantities while those with only magnitude are known as scalar quantities.

What are the examples of vector and scalar Quantities?

  • Vector quantities examples- Velocity, force, displacement, etc
  • Scalar quantities examples - Speed, distance, temperature, mass, etc

What would be the difference of speed and velocity then?

  • Speed and velocity differ in that velocity has both magnitude and direction (vector quantity) while speed has magnitude only (scalar quantity).

Further Explanation;

  • Velocity refers to the  rate of change in displacement of a body in motion
  • It is given by, Velocity = Displacement ÷ time
  • Speed on the other hand is the rate of change in distance of body.
  • It is calculated by, Speed = Distance ÷ time
  • Displacement is the distance in a specified direction.
  • Velocity and displacement are vector quantity in that they have both magnitude and direction.
  • Speed and distance on the other hand lack direction and thus are scalar quantity since they only have magnitude.
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A 2.5 mol sample of phosphorus pentachloride, PCl5 dissociates at 160C and 1.00atm to give 0.338 mol of phosphorus trichloride a
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Explanation:

Moles of phosphorus pentachloride present initially = 2.5 mol

Moles of phosphorus trichloride at equilibrium = 0.338 mol

PCl_5\rightleftharpoons PCl_3+Cl_2

Initially

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At equilibrium:

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Mass of 0.338 moles of  phosphorus trichloride at equilibrium:

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Mass of 2.162 moles of  phosphorus pentachloride at equilibrium:

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Moles of chloride gas present at equilibrium : 0.338 mol

Mass of 0.338 moles of chloride gas at equilibrium:

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