To find the average molar mass of an entire DNA double helix, we can calculate the total number of nucleotides in one DNA double helix and then multiply it by the average molar mass of a nucleotide.
Given:
Mass of DNA in the entire body = 50.0 grams
Number of nucleotides in one strand of DNA = 3.0 x 10^6
Average molar mass of a nucleotide = 327 g/mol
To find the number of nucleotides in one DNA double helix, we multiply the number of nucleotides in one strand by 2:
Number of nucleotides in one DNA double helix = 3.0 x 10^6 * 2 = 6.0 x 10^6
Now, we can calculate the average molar mass of an entire DNA double helix by multiplying the number of nucleotides in one DNA double helix by the average molar mass of a nucleotide:
Average molar mass of an entire DNA double helix = 6.0 x 10^6 * 327 g/mol = 1.962 x 10^9 g/mol.
Therefore, the average molar mass of an entire DNA double helix is 1.962 x 10^9 g/mol.