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: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter3: Mass Relations In Chemistry; Stoichiometry
Section: Chapter Questions
Problem 81QAP: Consider the following diagram, where atom X is represented by a square and atom Y is represented by...
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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(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?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7c430cc2-4097-4d45-9871-f052d1dcc428%2Faba95907-4253-4c34-911f-b0a28a5f953d%2F7bbyda_processed.jpeg&w=3840&q=75)
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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