# how much would you need to weigh out in order to have 0.2 moles of magnesium?

In order to understand how much a substance weighs out when 0.2 moles are present, one must first understand the concept of molar mass. Molar mass is the amount of mass in grams that is present in 1 mole of a given substance, and can be calculated by adding up the atomic masses of all atoms that make up the molecule. For magnesium specifically, its chemical formula is Mg so its atomic weight (u) would just be equal to 24.3050 g/mol since it has only one atom type making up its molecular structure. Therefore, if we wanted to have 0.2 moles of magnesium, we would need to weigh out 4.861 grams (24.3050 g/mol x 0.2 mol).

## how much would you need to weigh out in order to have 0.2 moles of magnesium?

The process for calculating this involves knowing what kind of substance you are using and understanding basic stoichiometry concepts such as molar mass and mole ratios through dimensional analysis conversions from grams into moles or vice versa depending on what units you’re initially given with your problem statement. In this case, our goal was to figure out how many grams needed for 0.2 moles so we started with finding the conversion factor between these two parameters: mole:grams = 1:molar mass = 1:24.3050 g/mol = 24g/0.2 mol = 4861g where 4861 represents our final answer after completing all steps properly!

To summarize then, if you need to know how much something will weigh out when there’s 0n point two (0..002) moles present -you simply take its corresponding atomic weight or ‘molar mass’ value multiplied by whatever number needed in order achieve desired results- which in this case was 4861g when accounting for magnesium’s specific attributes mentioned before! This process can be applied universally across any element or compound whenever looking at similar problems involving different substances too -just remember each compounds individual details like their exact chemical formulas & associated atomic weights beforehand though otherwise accurate answers may not always come easy!

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