How many liters of oxygen (at STP) are required to form 10.5 grams of hydrogen

Compare and contrast physical changes with chemical changes.

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa