Achemist dissolved crystals of an unknown substance into water at room temperature. he found that 33 g of the substance can be dissolved into 100ml of water. what property of the unknown substance was the chemist most likely investigating?

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

How do you know when a chemical reaction has occurred

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