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c) What does the rate of reaction depend on? (2 marks)

Collision frequency of reacting particles Energy transferred during the collision
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b) What 3 factors can increase the rate of reaction? (3 Marks)

b) A catalysis, increased temperature, increased concentrationb
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a) Complete the balanced symbol equations: (2 marks) H2SO4 + NaOH  HCl + Mg(OH)2 

H 2 SO 4 + 2NaOH --> 2H 2 O + Na 2 SO 4 2HCl + Mg(OH) 2 --> 2H 2 O + MgCl 2
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c) Sharon is organising an event. The tickets cost 12 pounds each. Sharon paid 200 pounds for the cost of the event. How many tickets will Sharon have to sell to make a profit? (2 marks)

Divide the cost of the event by the cost of the tickets to find how many tickets are required to break even 200/12 = 16.67 17 tickets would need to be sold to make any profit.
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a) Solve 6x + 13 =2x +5 (2 marks) b) Expand and simplify (q + 7)(q - 3) (2 Marks)

a) 6x+8=2x, 8=-4x, x=-2 b) q 2 + 7q -3q - 21, q 2 + 4q - 21
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