Test Review - Click Here
Assignment 2 Solutions
Additional Review Materials
Link to video (atoms and molecules) |
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October 29th
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October 20th
Lab outline and sample problem. |
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September 23rd
Unit 1 Assignment 1 Now Available, Due on Monday, September 29th |
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Journal Entry #1 - Due on Wednesday, September 24th
1. A sample of Oxygen is composed of 3 isotopes: Oxygen-15, Oxygen-16, and Oxygen-18. Determine the average atomic mass using the data below
Isotope Mass Abundance
Oxygen-15 14.98 amu 26.3%
Oxygen-16 15.96 amu 52.7%
Oxygen-18 17.94 amu 21.0%
2. Find the % abundance of each isotope in a sample of Sodium if their average mass is 22.91 amu.
(Na-22 = 21.93amu, Na-23 = 22.98 amu)
3. a. Find the molar mass of:
i) KMnO4 ii) Glucose
b. Determine the mass of 2.80 mol of each substance in a)
1. A sample of Oxygen is composed of 3 isotopes: Oxygen-15, Oxygen-16, and Oxygen-18. Determine the average atomic mass using the data below
Isotope Mass Abundance
Oxygen-15 14.98 amu 26.3%
Oxygen-16 15.96 amu 52.7%
Oxygen-18 17.94 amu 21.0%
2. Find the % abundance of each isotope in a sample of Sodium if their average mass is 22.91 amu.
(Na-22 = 21.93amu, Na-23 = 22.98 amu)
3. a. Find the molar mass of:
i) KMnO4 ii) Glucose
b. Determine the mass of 2.80 mol of each substance in a)