The compound K2SiO3• xH2O is a hydrated crystal. It is analyzed for percent water in a procedure similar to the barium chloride lab. An empty evaporating dish was weighed and found to have a mass of 61.57 g. The hydrated crystal was added and the new mass was 63.71 g. The evaporating dish with the sample was heated to remove all water and, after heating, was found to have a mass of 62.61 g. What is the correct formula for this hydrated crystal? (MW for K2SiO3 = 154 g/mol and the MW for H2O = 18 g/mol)

increased stability in the completion of fluorine's outer shell.

i think its 100.

hope this !

(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