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2 cards from this section. Quick, good the night before a test.
Calculate the number of moles in 50 grams of glucose (C6H12O6).
Use the molar mass of glucose which is approximately 180 g/mol.
In the balanced equation 2Na + Cl2 → 2NaCl, what is the mole ratio of Na to NaCl?
Look at the coefficients of each reactant and product.
What is Avogadro's number?
It has a specific numerical value significant in chemistry.
True or False: Theoretical yield is always equal to actual yield.
Think about real laboratory conditions.
If a chemist combusts 5 grams of propane in a reaction yielding 18 grams of carbon dioxide, what is the percent yield of the reaction if the theoretical yield was 22 grams?
Remember the percent yield formula.
How would you prepare a 0.5 M solution of sodium chloride from a 2 M stock solution? Calculate the volume of stock needed for 1 L of final solution.
Set up the dilution equation and solve for the unknown volume.
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