The average atomic mass of iron is 55.845 amu. this average mass represents?

What’s the scientific notation for the number 6,840,000,000

There are main groups in the modern periodic table of elements

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?