Suppose a vessel contains Cl2O5 at a concentration of 0.990M. Calculate the concentration of Cl2O5 in the vessel 740. seconds later

What does it mean for something to be dissolved in watera- it is submerged in water moleculesb-it is stirred in the water moleculesc- it is surrounded by water molecules d-it has water molecules added to it

Describe the magnitude of the buoyant force

Need , hurry pls create a superhero out of the element iron, what are its powers and his sidekick ( an element that works well with iron). how was the superhero made and who discovered him