HELP ASAP!!!!!!
A double replacement chemical equation is shown.

MnO 2 + HCl → MnCl 2 + H 2O + __Cl 2

What are the coefficients that should be placed in the blanks to make sure the law of conservation of matter is upheld?
1,4,1,2,1
2,4,2,4,1
1,2,1,2,1
2,3,1,2,1

To balance the chemical equation the number of atoms of each element entering the reaction have to be equal to the number of atoms of each element leaving the reaction, in order to conserve the mass.

So the balanced chemical equation is:

MnO₂ + 4 HCl → MnCl₂ + 2 H₂O + Cl₂

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HELP ASAP!!!!!! A double replacement chemical equation is shown. __MnO 2 + __HCl → __MnCl 2 + __H 2O + __Cl 2 What are the coefficients that should be placed in the blanks to make sure the law of conservation of matter is upheld? 1,4,1,2,1 2,4,2,4,1 1,2,1,2,1 2,3,1,2,1

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HELP ASAP!!!!!!
A double replacement chemical equation is shown.

MnO 2 + HCl → MnCl 2 + H 2O + __Cl 2

What are the coefficients that should be placed in the blanks to make sure the law of conservation of matter is upheld?
1,4,1,2,1
2,4,2,4,1
1,2,1,2,1
2,3,1,2,1