What refers to a definite amount of a compound or molecule represented by its formula​

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?

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

What is the mass of 8 moles of sodium atoms