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Lab: Isotopes of Eminemium PLEASE DO NOT WRITE ON THIS

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Lab: Isotopes of Eminemium
PLEASE DO NOT WRITE ON THIS CLASS COPY
Purpose: To determine the ATOMIC MASS of the element Eminemium (MM) by finding the MASS NUMBER of
all the isotopes of Eminemium.
Procedure:
1. Obtain a sample of Eminemium.
2. Create a data table in your notebook:
Isotope Name
Total Mass (g)
# Atoms
Avg Mass
1 Atom (g)
Relative
Abundance
ALL Atoms
3. Zero the balance. Then zero it again with an empty cup on it. (Tare the balance).
4. Mass the whole sample and count how many atoms are in the sample.
Record both in the “ALL Atoms” row of the data table.
5. Sort the original sample into the three isotopes – one per container.
6. Mass each isotope sample, and record in the “Total Mass” column of the data table for each sample.
7. Count the number of atoms in each isotope sample, and record in the “# Atoms” column of the data table.
Analysis:
1. For each row, calculate and record the mass of one atom.
π‘‡π‘œπ‘‘π‘Žπ‘™ π‘€π‘Žπ‘ π‘  (𝑔)
)
# π΄π‘‘π‘œπ‘šπ‘ 
(
= π‘Žπ‘£π‘’π‘Ÿπ‘Žπ‘”π‘’ π‘šπ‘Žπ‘ π‘  π‘œπ‘“ π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š (𝑔)
2. For each isotope sample, calculate and record the relative abundance.
# π΄π‘‘π‘œπ‘šπ‘  π‘œπ‘“ πΌπ‘ π‘œπ‘‘π‘œπ‘π‘’
(
) = π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’
𝑇𝑂𝑇𝐴𝐿 # π΄π‘‘π‘œπ‘šπ‘ 
3. Go to the Chem Lab Methods website and click on the ENTER M&M DATA HERE link.
Enter information requested by the form.
4. Extra challenge: Calculate ATOMIC MASS for Eminemium
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 1)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 1) +
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 2)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 2) +
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 3)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 3) = 𝐴𝑇𝑂𝑀𝐼𝐢 𝑀𝐴𝑆𝑆
π‘‘π‘œπ‘‘π‘Žπ‘™ π‘šπ‘Žπ‘ π‘  π‘œπ‘“ 𝐴𝐿𝐿 π‘Žπ‘‘π‘œπ‘šπ‘ 
)
# π‘Žπ‘‘π‘œπ‘šπ‘  π‘œπ‘“ 𝐴𝐿𝐿 π‘Žπ‘‘π‘œπ‘šπ‘ 
Compare to: (
=?
Clean-up: Evenly divide the Eminemium among all interested lab partners. Return cups to
Ms. Schneider. Throw away garbage.
Lab: Isotopes of Eminemium - Analysis:
1. For each row, calculate and record the mass of one atom.
π‘‡π‘œπ‘‘π‘Žπ‘™ π‘€π‘Žπ‘ π‘  (𝑔)
)
# π΄π‘‘π‘œπ‘šπ‘ 
(
= π‘Žπ‘£π‘’π‘Ÿπ‘Žπ‘”π‘’ π‘šπ‘Žπ‘ π‘  π‘œπ‘“ π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š (𝑔)
2. For each isotope sample, calculate and record the relative abundance.
# π΄π‘‘π‘œπ‘šπ‘  π‘œπ‘“ πΌπ‘ π‘œπ‘‘π‘œπ‘π‘’
(
) = π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’
𝑇𝑂𝑇𝐴𝐿 # π΄π‘‘π‘œπ‘šπ‘ 
3. Go to the Chem Lab Methods website and click on the ENTER M&M DATA HERE link.
Enter information requested by the form.
Extra challenge: Calculate ATOMIC MASS for Eminemium
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 1)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 1) +
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 2)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 2) +
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 3)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 3) = 𝐴𝑇𝑂𝑀𝐼𝐢 𝑀𝐴𝑆𝑆
π‘‘π‘œπ‘‘π‘Žπ‘™ π‘šπ‘Žπ‘ π‘  π‘œπ‘“ 𝐴𝐿𝐿 π‘Žπ‘‘π‘œπ‘šπ‘ 
)
# π‘Žπ‘‘π‘œπ‘šπ‘  π‘œπ‘“ 𝐴𝐿𝐿 π‘Žπ‘‘π‘œπ‘šπ‘ 
Compare to: (
=?
Lab: Isotopes of Eminemium - Analysis:
1. For each row, calculate and record the mass of one atom.
π‘‡π‘œπ‘‘π‘Žπ‘™ π‘€π‘Žπ‘ π‘  (𝑔)
)
# π΄π‘‘π‘œπ‘šπ‘ 
(
= π‘Žπ‘£π‘’π‘Ÿπ‘Žπ‘”π‘’ π‘šπ‘Žπ‘ π‘  π‘œπ‘“ π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š (𝑔)
2. For each isotope sample, calculate and record the relative abundance.
# π΄π‘‘π‘œπ‘šπ‘  π‘œπ‘“ πΌπ‘ π‘œπ‘‘π‘œπ‘π‘’
(
) = π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’
𝑇𝑂𝑇𝐴𝐿 # π΄π‘‘π‘œπ‘šπ‘ 
3. Go to the Chem Lab Methods website and click on the ENTER M&M DATA HERE link.
Enter information requested by the form.
Extra challenge: Calculate ATOMIC MASS for Eminemium
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 1)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 1) +
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 2)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 2) +
(π‘Ÿπ‘’π‘™π‘Žπ‘‘π‘–π‘£π‘’ π‘Žπ‘π‘’π‘›π‘‘π‘Žπ‘›π‘π‘’ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 3)(π‘Žπ‘£π‘” π‘šπ‘Žπ‘ π‘  π‘œπ‘›π‘’ π‘Žπ‘‘π‘œπ‘š π‘œπ‘“ π‘–π‘ π‘œπ‘‘π‘œπ‘π‘’ 3) = 𝐴𝑇𝑂𝑀𝐼𝐢 𝑀𝐴𝑆𝑆
π‘‘π‘œπ‘‘π‘Žπ‘™ π‘šπ‘Žπ‘ π‘  π‘œπ‘“ 𝐴𝐿𝐿 π‘Žπ‘‘π‘œπ‘šπ‘ 
)
# π‘Žπ‘‘π‘œπ‘šπ‘  π‘œπ‘“ 𝐴𝐿𝐿 π‘Žπ‘‘π‘œπ‘šπ‘ 
Compare to: (
=?
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