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A catalyst is a substance which provides an alternative pathway requiring a lower activation energy for the chemicals to react, and speeds up the rate of reaction. A catalyst also remains chemically uncha...

Calculating the mass of 1 molecule of ammonia:

Mass = ( Number of hydrogen atoms x Mass of hydrogen atom) + ( Number of nitrogen atoms x Mass of nitrogen atoms)

Mass = ( 3 x 1 ) + ( 1...

1. Collision frequency of reacting particles
   
2. Energy transferred during the collision

b) A catalysis, increased temperature, increased concentrationb

H₂SO₄ + 2NaOH --> 2H₂O + Na₂SO₄
2HCl + Mg(OH)₂ --> 2H₂O + MgCl₂