The correct answer is b) 2, 4, 3.
To balance the equation and follow the law of conservation of mass, the number of atoms of each element on both sides of the equation must be equal.
On the left side of the equation, there are 2 Au atoms (Au2O3), and on the right side there is 1 Au atom. To balance this, we need to multiply the coefficient in front of Au on the right side by 2 (2Au), giving us a total of 2 Au atoms on both sides.
On the left side of the equation, there are 3 O atoms (Au2O3), and on the right side there are 2 O atoms (O2). To balance this, we need to multiply the coefficient in front of O on the right side by 3 (3O2), giving us a total of 3 O atoms on both sides.
Therefore, the balanced equation is:
2Au2O3 → 4Au + 3O2
Look at the following equation.
__Au2O3 → __Au + __O2
In order to follow the law of conservation of mass, this equation must have which set of coefficients, in order from left to right?
a
1, 3, 1
b
2, 4, 3
c
1, 1, 3
d
2, 1, 3
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