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kndaniels05
15.04.2020 •
Chemistry
Starting with 6.3 g of salicylic acid, how many grams of acetylsalicylic acid (theoretical yield) can be made? Assume salicylic acid is the limiting reagent and a one to one stoichiometry. Use the molecular weights that you have already calculated. Give two significant digits.
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Ответ:
We will produce 8.2 grams of acetylsalicylic acid
Explanation:
step 1: Data given
Mass of salicylic acid, = 6.3 grams
Molar mass salicylic acid = 138.12 g/mol
Molar mass of acetylsalicylic acid = 180.158 g/mol
Step 2: The balanced equation
C7H6O3 + C4H6O3 → C9H8O4 + C2H4O2
Step 3: Calculate moles salicylic acid
Moles salicylic acid = mass salicylic acid / molar mass salicylic acid
Moles salicylic acid = 6.3 grams / 138.12 g/mol
Moles salicylic acid = 0.0456 moles
Step 4: Calculate moles acetylsalicylic acid
Since the mole ratio is 1 to 1
For 0.0456 moles salicylic acid we'll have 0.0456 moles acetylsalicylic acid
Step 5: Calculate mass acetylsalicylic acid
MAss acetylsalicylic acid = moles acetylsalicylic acid * molar mass acetylsalicylic acid
MAss acetylsalicylic acid = 0.0456 moles * 180.158 g/mol
Mass acetylsalicylic acid = 8.2 grams
We will produce 8.2 grams of acetylsalicylic acid
Ответ:
A. Metalloids.
Explanation:
Metalloids. Metalloids, also called semiconductors, are the elements that border the zigzag line on the periodic table.