Chemical Reactions Do Not Change the Identity of the Participating $\rarr$

question 69

Multiple Choice

Chemical reactions do not change the identity of the participating atoms;all atoms present at the beginning of the reaction must be present at the end.Balance the chemical reaction by indicating the number of molecules necessary for each reactant and product: ________ Cl₂ +________ NaBr $\rarr$ _______ Br₂ + ________ NaCl.

• A) 1;1;1;1
• B) 1;2;1;1
• C) 1;2;1;2
• D) 2;2;1;2

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