Help plz! Who is credited with the invention of the modern periodic table?

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

The minerals found in bones are deposited by living cells called

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp