What is the percent by mass of 25.0 g of sodium acetate mixed with 40. g of water?

Define dew point. i am writing this part to be able to ask the question

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

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?