A solution of ethanedioic acid was made up and it was calculated that 22.5cm3 of certain potassium manganate (VII) solution would oxidize 25cm3 of the ethanedioic acid solution were needed. The error lays in fact that the calculation was based on formula of anhydrous acid where the crystalline acid was actually weighed out. what is the value of X in the formula H2C2O4.XH2O

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )

gas

explanation:

smoke is the matter of a gas

(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