Wich of the following salt solutions is the mosts concentrated ? a.20 grams of salt dissolve in 100 ml of water
b.30 grams of salt dissolve in 100 mL of water
c.30 grams of salt dissolve in 200 mL of water
d.50 grams of salt dissolve in 200 mL of water​

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.