18 cm^3 of carbon (ii) oxide are spartad with 18 cm^3 of oxygen . if all volume of gases are measure at s. t.p. calculate the volume of residual gases after sparking ​

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

How many molecules are found in 1.32 mol of nacl?

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false