Bell Ringer How many moles of Nitric acid are there in 250 g?

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Presentation transcript:

Bell Ringer How many moles of Nitric acid are there in 250 g? #moles= 250 g x 1 mol HNO3 = 3.96 mol 63 g

Stoichiometry: Calculations with Chemical Formulas and Equations Molar Mass

Molar Mass By definition, these are the mass of 1 mol of a substance (i.e., g/mol) The molar mass of an element is the mass number for the element that we find on the periodic table The formula weight (in amu’s) will be the same number as the molar mass (in g/mol)

Using Moles Moles provide a bridge from the molecular scale to the real-world scale

Mole Relationships One mole of atoms, ions, or molecules contains Avogadro’s number of those particles One mole of molecules or formula units contains Avogadro’s number times the number of atoms or ions of each element in the compound

How many moles of sodium bicarbonate (NaHCO3) are in 508 g of NaHCO3? Example 3.10 : Converting Grams to Moles Calculate the number of moles of glucose (C6H12O6) in 5.380 g of C6H12O6. How many moles of sodium bicarbonate (NaHCO3) are in 508 g of NaHCO3? 6

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How many moles of sodium bicarbonate (NaHCO3) are in 508 g of NaHCO3?