How many liters of space will are in 4.00 x 10^22 molecules of 02 occupy at stp

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a.inner transition b.noble gases c.representative d. transition

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?