Its the very last option i believe
Answer:
The stock name (CrBr3) : <em>chromium(III) sulfide</em>
The classical name (CrBr3) : <em>chromic bromide</em>
The solution to the polynomial expression since the power of the variable is in the second degree is 6.29 × 10² cm
<h3>What is the power of a variable?</h3>
The power of a variable refers to the exponent of the variable and the highest power of a variable is the degree to which the variable is being raised. From the information given, the highest power of the variable is a polynomial.
Given that:

So, since the exponents are in the same power we are going to add them all together multiplied by their exponent.
i.e.


Learn more about the power of a variable here:
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