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2. Calculate each of the following quantities: a. Mass in grams of 0.68 mol KMnO4 b. Mass in kilograms of 4.6 x 1021 molecules of NO₂ C. Moles of Fe(CIO4)3 in a 15.8 kg sample 3. Calculate the number of moles and formula units in 78.9 g of sodium perchlorate. 4. What is the percent composition of each in element in NH4HCO3? 5. What is the percent composition of Mn in KMnO4? 6. Ammonium nitrate is a common fertilizer. Agronomist base the effectiveness of fertilizers on their nitrogen content. Calculate the mass percent of N in ammonium nitrate. 7. How many moles are in 15 g of lithium? 8. How many grams are in 88.1 moles of magnesium? 9. How many atoms are in 98.3 grams of aluminum hydroxide? 10. How many carbon dioxide molecules are there in 3.25 moles of carbon dioxide? 11. What is the mass of 3.40 moles of Cu(NO3)2? 12. A chemist determines that 1.26 g of iron reacts with 0.54 g of oxygen to form rust [iron (III) oxide]. What is the percent composition of each element in the new compound? 13. In an experiment, a student took a 12.2 g sample of table salt and chemically separated the chlorine from the sodium. He determined that there were 5.2 g of chlorine in the sample. What is the percent composition of each element in the table salt sample?

2. Calculate each of the following quantities: a. Mass in grams of 0.68 mol KMnO4 b. Mass in kilograms of 4.6 x 1021 molecules of NO₂ C. Moles of Fe(CIO4)3 in a 15.8 kg sample 3. Calculate the number of moles and formula units in 78.9 g of sodium perchlorate. 4. What is the percent composition of each in element in NH4HCO3? 5. What is the percent composition of Mn in KMnO4? 6. Ammonium nitrate is a common fertilizer. Agronomist base the effectiveness of fertilizers on their nitrogen content. Calculate the mass percent of N in ammonium nitrate. 7. How many moles are in 15 g of lithium? 8. How many grams are in 88.1 moles of magnesium? 9. How many atoms are in 98.3 grams of aluminum hydroxide? 10. How many carbon dioxide molecules are there in 3.25 moles of carbon dioxide? 11. What is the mass of 3.40 moles of Cu(NO3)2? 12. A chemist determines that 1.26 g of iron reacts with 0.54 g of oxygen to form rust [iron (III) oxide]. What is the percent composition of each element in the new compound? 13. In an experiment, a student took a 12.2 g sample of table salt and chemically separated the chlorine from the sodium. He determined that there were 5.2 g of chlorine in the sample. What is the percent composition of each element in the table salt sample?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Hello I was wondering if you could please just provide the answers and no work since in order to receive full credits we must show both the answers and the work but would like to just have an answer key to make sure my work is correct thank you so much have a lovely day :)
2. Calculate each of the following quantities: a. Mass in grams of 0.68 mol KMnO4 b. Mass in kilograms of 4.6 x 1021 molecules of NO₂ C. Moles of Fe(ClO4)3 in a 15.8 kg sample 3. Calculate the number of moles and formula units in 78.9 g of sodium perchlorate. 4. What is the percent composition of each in element in NH4HCO3? 5. What is the percent composition of Mn in KMnO4? 6. Ammonium nitrate is a common fertilizer. Agronomist base the effectiveness of fertilizers on their nitrogen content. Calculate the mass percent of N in ammonium nitrate. 7. How many moles are in 15 g of lithium? 8. How many grams are in 88.1 moles of magnesium? 9. How many atoms are in 98.3 grams of aluminum hydroxide? 10. How many carbon dioxide molecules are there in 3.25 moles of carbon dioxide? 11. What is the mass of 3.40 moles of Cu(NO3)2? 12. A chemist determines that 1.26 g of iron reacts with 0.54 g of oxygen to form rust [iron (III) oxide]. What is the percent composition of each element in the new compound? 13. In an experiment, a student took a 12.2 g sample of table salt and chemically separated the chlorine from the sodium. He determined that there were 5.2 g of chlorine in the sample. What is the percent composition of each element in the table salt sample?
Transcribed Image Text:2. Calculate each of the following quantities: a. Mass in grams of 0.68 mol KMnO4 b. Mass in kilograms of 4.6 x 1021 molecules of NO₂ C. Moles of Fe(ClO4)3 in a 15.8 kg sample 3. Calculate the number of moles and formula units in 78.9 g of sodium perchlorate. 4. What is the percent composition of each in element in NH4HCO3? 5. What is the percent composition of Mn in KMnO4? 6. Ammonium nitrate is a common fertilizer. Agronomist base the effectiveness of fertilizers on their nitrogen content. Calculate the mass percent of N in ammonium nitrate. 7. How many moles are in 15 g of lithium? 8. How many grams are in 88.1 moles of magnesium? 9. How many atoms are in 98.3 grams of aluminum hydroxide? 10. How many carbon dioxide molecules are there in 3.25 moles of carbon dioxide? 11. What is the mass of 3.40 moles of Cu(NO3)2? 12. A chemist determines that 1.26 g of iron reacts with 0.54 g of oxygen to form rust [iron (III) oxide]. What is the percent composition of each element in the new compound? 13. In an experiment, a student took a 12.2 g sample of table salt and chemically separated the chlorine from the sodium. He determined that there were 5.2 g of chlorine in the sample. What is the percent composition of each element in the table salt sample?
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