Given: na2sio3 (s) + hf(aq) h2sif6 (aq) + 2 naf (aq) + 3 h2o (i). how many moles of hf are needed to react with 0.9300 mol of na2si03

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

What is the equilibrium constant of aa+bb=cc+dd