When 1 g of a cube of manganese (iv) oxide was added to 100 cm3 of hydrogen peroxide, water and oxygen were produced. manganese oxide was not used up in the reaction. based on this information, which of the following is likely to increase the rate formation of the products? using 2 grams of manganese oxide using 50 cm3 of hydrogen peroxide replacing the cube of manganese (iv) oxide with its powder removing manganese (iv) oxide from the reaction mixture

- decrease the number of plants and animals living in the water.

(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