This question is practice and is worth zero points. alum is a compound used in a variety of applications including cosmetics, water purification, and as a food additive. it can be synthesized from aluminum metal, sulfuric acid, water, and potassium hydroxide, as seen in the equation. 2 al(s) + 2 koh(aq) + 4 h2so4(aq) + 10 h2o(l) ⟶ 2 kal(so4)2∙12 h2o(s) + 3 h2(g) alum using the data, determine the theoretical and percent yield for this alum synthesis. note that aluminum is the limiting reactant. description mass (g) bottle mass 10.302 bottle mass with aluminum pieces 12.279 final product and bottle mass 18.475 what is the theoretical yield of alum?

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(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied