In class, Ricardo rips up a piece of paper. Select the correct reason(s) that this is an example of a physical change. Pick all that apply
A. The paper no longer has smooth edges.

B. The paper has not produced a gas when torn.
C, The paper's chemical composition has been changed.

D. The paper has not changed colors.

E. The paper is still paper with the same chemical makeup.

What is the molar mass of babr2? a. 217.2 g/mol b. 297.1 g/mol c. 354.5 g/mol d. 434.4 g/mol

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Stage in which a star’s outer layers have started to cool and grow outward?