Asample of pure lithium carbonate contains 18.8% lithium by mass. what is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample? a.9.40 % b.18.8 % c.37.6 % d.75.2 %

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

What if it is did darwin used to support his theory of evolution