Record the number of significant digits in each of the following values:
(a) 3.545
(b) 308
(c) 0.000876

The answer is 5 10 15

A-rna has coded instructions for making proteins, and dna translates the code.

Most elements have more than one naturally occurring isotope. as you learned previously, the atoms of those isotopes have the same atomic number (number of protons), making them belong to the same element, but they have different mass numbers (total number of protons and neutrons) giving them different atomic masses. so which mass is put on the periodic table for each element? is it the most common isotope’s mass? the heaviest mass? this activity will answer that question.