If a dna molecule is found to be made of 40% thymine,what percentage guanine would

It needs to equal the amount of adenine. The guanine to cyanine. So it would be 40% thymine 40 % adenine then 10% guanine and 10% cyanine would make sense

It isn't specified which neutral atom of zinc it pertains to. There are 5 stable isotopes of Zinc. It could be any of those. However, one thing is true for all possible conditions. These neutral atoms would have the same number of protons because they are of the Zinc element. It would always have 30 protons when neutral. So, the answer is: Both have an equal number of protons.