Grams to Moles Conversions
Practice converting between grams and moles for various chemical compounds.
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Grams to Moles Conversions
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Read each question carefully and perform the necessary grams to moles conversions. Show all your work.
1. What is a mole in chemistry, and why is it a useful unit?
2. The molar mass of water (H₂O) is approximately g/mol.
3. To calculate the molar mass of a compound, you need the atomic masses of each element and the of each element in the compound.
4. How many moles are in 36.0 grams of H₂O? (Atomic masses: H=1.0 g/mol, O=16.0 g/mol)
5. Calculate the number of moles in 88.0 grams of CO₂. (Atomic masses: C=12.0 g/mol, O=16.0 g/mol)
6. Which of the following is the correct formula to convert grams to moles?
moles = grams × molar mass
moles = grams ÷ molar mass
moles = molar mass ÷ grams
moles = grams + molar mass
7. A chemist has 50.0 grams of sodium chloride (NaCl). How many moles of NaCl does she have? (Atomic masses: Na=23.0 g/mol, Cl=35.5 g/mol)
8. What is the molar mass of glucose (C₆H₁₂O₆)? Then, calculate the number of moles in 180.0 grams of glucose. (Atomic masses: C=12.0 g/mol, H=1.0 g/mol, O=16.0 g/mol)