Wksht3 - Kyle Paulk SI CHEM 1201 Socially Awkward Penguin...

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Kyle Paulk SI CHEM 1201 Socially Awkward Penguin Balancing Chemical Equations When a reaction occurs, bonds break and new bonds form, and the number of atoms of each element can actually be accounted for! How do we balance reactions? By inspection (trial and error) Make sure all formulas are correct! You must have the same number of atoms of each type on both sides of the equation Total Mass of the reactants = Total Mass of the Products CO(g) + O 2 (g) CO 2 (g) C 3 H 8 (g) + O 2 (g) CO 2 (g) + H 2 O(l) HCl(g) + H 2 O(l) H 3 O + (aq) + Cl - The Mole There are 6.022 X 10 23 atoms, molecules, etc. in 1 mole of a substance. This number is known as Avogadro’s # 1 mol of sodium contains 6.022 X 10 23 atoms of Na 1 mol of carbon dioxide contains 6.022 X 10 23 molecules of CO 2 How many atoms of of Ar are there in 0.345 mole of Ar? Think Dimensional Analysis Calculate the number of molecules in 6.2 g of formaldehyde, CH 2 O.
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Kyle Paulk SI CHEM 1201 A sample of Vitamin A, C 20 H 30
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Wksht3 - Kyle Paulk SI CHEM 1201 Socially Awkward Penguin...

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