as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
calculate the atomic mass for lithium.
user
the atomic mass for lithium is 6.941 u (units). this is determined from the number of protons and neutrons in the nucleus of a lithium atom, which is 3 protons and 4 neutrons. each proton and neutron has a mass of 1.007 u, resulting in a total mass of 6.941 u.
assistant