Naturally, occurring copper has two isotopes with relative atomic masses 62.930 and 64.928. If the average relative atomic mass is 63.546, what are the relative % abundances of the two

isotopes in this sample?

the answer to your question is c

its first and third is your answer i did the qustion the fourth isnt right

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.