How would you prepare a 1 L solution of 3 M MgO?

You need to measure 120.9132 grams of MgO and add to 1 liter of distilled water in a beaker.

Explanation:

Capital M stands for molarity, or moles/liter. So 3 M MgO means 3 moles per liter of MgO.

1 L × = 3 moles MgO

This means you need to measure 3 moles MgO to put into 1 Liter of water.

But you don't know how much that is, so you need to convert moles to grams.

First you need to find how many grams are in 1 mole of MgO.

You can search the molar mass of MgO online to get: 40.3044 g

But if you don't have the internet, use the periodic table to add the masses of Mg and O: 24.305 g + 15.999 g = 40.3044 g

Then write the fraction so that the units cancel out, so you get grams by itself on the top of the fraction.

1 L × × = 120.9132 g MgO

You need to measure 120.9132 grams of MgO and add to 1 liter of distilled water.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.