What is the atomic mass of gold rounded to the nearest whole number

Hello.

The atomic mass of gold is 196.96657u. In order to round to the nearest whole number, we must look one place to the right of that place value. If that number has a value of 5 or higher, we can round up.

For example;
1.54; round to the nearest whole number.
Since the place value to the right (tenths) has a value of 5 or higher, we can round our whole number up to 2.00.

Let's apply this information to our current problem.
196.96657; round to the nearest whole number.
The whole number is "196", so let's take a look at the place value to the right of "6" - it is 9. As it is higher than 5, we can round our whole number up by 1.

Our new number is: 197.

Your answer is: 197.

I hope this helps!

Not a  mixture of two common elements that can be separated by physical means.

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.