Problemas
4. If you have 2.5times 10^22 molecules of glucose (C_(6)H_(12)O_(6)) , how much does this amount weigh in grams?
Roztwór
Martín
veterano · Tutor durante 10 años
4.7
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Respuesta
To find the weight of
molecules of glucose in grams, we need to follow these steps:1. Calculate the molar mass of glucose (C6H12O6).2. Convert the number of molecules to moles.3. Convert the number of moles to grams.Step 1: Calculate the molar mass of glucose (C6H12O6).The molar mass of glucose is calculated by adding the molar masses of its constituent elements:- Carbon (C): 12.01 g/mol- Hydrogen (H): 1.01 g/mol- Oxygen (O): 16.00 g/molMolar mass of glucose = (6 × 12.01) + (12 × 1.01) + (6 × 16.00) = 180.16 g/molStep 2: Convert the number of molecules to moles.To convert the number of molecules to moles, we use Avogadro's number, which is
molecules/mol.Number of moles =
= 0.415 molesStep 3: Convert the number of moles to grams.To convert the number of moles to grams, we multiply the number of moles by the molar mass of glucose.Weight in grams = 0.415 moles × 180.16 g/mol = 74.5 gramsTherefore,
molecules of glucose weigh approximately 74.5 grams.