Mole-Volume+Conversions+and+Multi-Step+Conversions+Involving+the+Mole



**Mole-Volume and Mole-Mass Conversions** ** But why should we care? ** Molar-mass is the mass that is shown on elements in the periodic table. It gives the size of the element, for example: Hydrogen has an atomic mass of 1g, therefore 1 mole of hydrogen is equal to 1g of hydrogen. As well as Iron. Iron's atomic mass is 26g. Therefore 1 mole of Iron is equal to 29g of Iron. **Molar-mass is an important factor in Mole-Volume Conversions because 1 mole of any gas at STP (Standard Temperature and Pressure) has a volume of 22.4 Liters:**

media type="custom" key="3897981"  ** Converting between Volume and Moles of a Gas **To convert between volume and moles of a gas you use the traditional Dimensional Analysis that we've been working with the entire year. The mole-volume fact is : **volume of a gas = moles of gas X __22.4 L__ **
 *  1 mol **

media type="custom" key="3898001" To calculate the molar mass of an element you: media type="custom" key="3898005" **Masses of Gasses** If you need the mass of a gas you use the equation: moles = **mass (grams) X __1 mole__ mass (grams) ** media type="custom" key="3897961" **Mole Facts** Mole means of a substance. This is Avogadro's number. The Molar-Mass is the mass of one mole of a substance **1mol = 6.02x10 to the 23rd power** of a substance. media type="custom" key="3898009"