Chemistry, 06.12.2020 21:30 mem8163

PLEASE HELP Question 1:
In the reaction BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq), what phases are the reactants in before the reaction?
A)

Both reactants are gases.

B)

BaCl2 is a liquid, and Na2SO4 is a gas.

C)

BaCl2 is a solid, and Na2SO4 is in aqueous solution.

D)

Both reactants are in aqueous solution.

Question 2:
A chemical reaction has the equation 4Al (s) + 3 O2 (g) → 2Al2O3 (s). What type of reaction is this?

A)

Single displacement

B)

Double displacement

C)

Decomposition

D)

Synthesis

Answers: 3

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PLEASE HELP Question 1:
In the reaction BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq), wh...