Why does 40.0g NaOH added to 1.00 L of water not make a 1 M NaOH solution ?

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Compare and contrast physical changes with chemical changes.

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?