What is the number of moles of solute in 250 mL of a 0.4M solution? O 0.1 mol
O 0.16 mol
O 0.62 mol
O 1.6 mol

Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon

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?

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years