Answer:
Because they have scaled feet
Transcript of Physical and Chemical changeswhen baking a cake. The first change that occurs when you are baking a cake is a physical change. When you pour the cakebatter in to the pan/bowl, then add the water, the batter only changes its appearance from a solid to a liquid
It is chemical change I got that answer right on my test
The atomic mass of a certain element is summation of the product of the decimal equivalent of the percentage abundance and the given atomic mass of each of the isotope. If we let x be the percentage abundance of the 86 amu-isotope then, the second one is 1-x such that,
x(86) + (1 - x)(90) = 87.08
The value of x from the equation is 0.73. This value is already greater than 0.5. Thus, the isotope with greatest abundance is that which is 86 amu.