What is the difference between strong and weak acids

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate