Using a periodic table to find the hidden message, 21 - 53 - 63(erase the u) - 7 - 58 17 - 33 - 16 53 - 16 9 - 92 - 7 This actually a science problem but there is no science subject available for choosing.

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?