What compound has a molar mass of 72.67g/mol???

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it