The first reaction is a synthesis reaction (A+B -> AB)
Answer:
ionic compounds are made from metal and non mental elements
Explanation:
in this case it is know as an ionic compound because it contains a charge. For example, NaCl is simply a compound as it contains no charges (the charges cancel out as Cl is -1 and Na is +1)
but OH- is an ionic compound as it has a charge if -1 (O has a -2 charge and H has a +1 charge, so -2+1=-1 so OH has -1 charge)
Molecular mass of H2O is: 16+2*1=18
so moles of 40g of H2O is: 40/18=2.22
