Empirical Formula Lab cloned 2/8/2021
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Last updated almost 5 years ago
9 questions
Note from the author:
The opening is from cK-12 online flexbook on chemistry chapter 7 section 2. The link is https://www.ck12.org/book/ck-12-chemistry-concepts-intermediate/section/7.2/
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Watch the video and fill out the data table.
Watch the video and fill out the data table.
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1. Determine the mass of the zinc that reacted.
1. Determine the mass of the zinc that reacted.
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2. Determine the mass of zinc chloride (guess which one you should use).
2. Determine the mass of zinc chloride (guess which one you should use).
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3. Determine the mass of chlorine in the zinc chloride.
3. Determine the mass of chlorine in the zinc chloride.
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4. Determine the number of moles of zinc, then the number of moles of chlorine.
4. Determine the number of moles of zinc, then the number of moles of chlorine.
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5. Determine the ratio: 📷
5. Determine the ratio: 📷
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Conclusion
1. Since you believe that atoms combine in simple whole-number ratios, what do you think is the likely ratio?
Conclusion
1. Since you believe that atoms combine in simple whole-number ratios, what do you think is the likely ratio?
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2. Based on your findings, what is the empirical formula of zinc chloride?
2. Based on your findings, what is the empirical formula of zinc chloride?
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3. Suppose that you had not driven off all the water from the zinc chloride. How would this error have affected the ratio in calculation 5?
3. Suppose that you had not driven off all the water from the zinc chloride. How would this error have affected the ratio in calculation 5?