The coefficients needed to balance the equation would be 2, 7, 4, and 6 respectively.
<h3>Balancing chemical equation</h3>
This requires that the number of atoms of each element is the same both on the reactant and product's sides.
Hence, the balanced equation of the reaction becomes:
Thus, the coefficient for each species would be 2, 7, 4, and 6 respectively.
More on balancing chemical equations can be found here: brainly.com/question/15052184
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A mole is defined to be like particales of a substance
For #7, both hydrogen and oxygen are nonmetals, making it not A,
B would be the correct answer
For #8, chemical properties is the characteristic of a substance observed in a chemical reaction, A and B would be physical. C would be correct
hope this helped
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You need to calculate the atomic weight of that element.
number of moles = mass / atomic weight
atomic weight = mass / number of moles
atomic weight = 209.1 / 3 = 69.7 g/mol
The element produced will be gallium, Ga.
