Respuesta :
					                   2.5 g is the mass of the penny for Canadian coins which have become defunct
					                
					                
					             
					                   The mass of a penny is 2.5 grams. The mass of a penny was 3.1 grams before 1982, but after 1982 the mass changed to 2.5 grams.
Hope this helps! ;)
					                
					             Hope this helps! ;)
 
			                  