If 20.00 grams of KClO3 react, how many grams of O2 will form?

2 KClO3 -->2 KCl + 3 O2

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a