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11 cards from this deck
Total mass of reactants = total mass of products
No atoms created or destroyed, just rearranged
Same number of atoms of each element on both sides
Numbers in front of formulas to balance atoms
To reflect conservation of mass
Write the unbalanced equation
Coefficients (numbers in front of formulas)
Sum of MrM_rMr of reactants = sum of MrM_rMr of products
Total mass of all atoms in a compound
Add up ArA_rAr of all elements in the compound
N2+3H2→2NH3N_2 + 3H_2 → 2NH_3N2+3H2→2NH3
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