Consider three elements A B and C all of which have atomic numbers of less then 20. The atomic number of A is x, and the atomic number of B is three less than the atomic number of A Element A forms cations with formula A+ and reacts with element C to form a solid substance with the formula AC

What is element A
Which group does element C belong to

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?