Convert the volume 0.455 m3 to the unit ml

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

What is the temperature of one mole of helium gas at stp?

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius