Question: Determine the molar mass of each of this gas. 2.99 g of this gas occupies 1.83 L at STP.
Answer Options:
[A] 28.96 g/mol
[B] 34.20 g/mol
[C] 44.01 g/mol
[D] 36.46 g/mol
Correct Answer
36.64 g/mol
Answer:
Question: A sample of Ne gas has a pressure of 719 mmHg with an unknown temperature. The same gas has a pressure of 275 mmHg when its temperature is 349 K, with no change in volume or amount of gas. What was the initial temperature, in Kelvin, of the gas?
Answer Options:
[A] 91.24 K
[B] 912.48 K
[C] 27.5 K
[D] 275 K
Correct Answer
912.48 K
Answer:
Question: A gas sample has a temperature of 32°C with an unknown volume. The same gas has a volume of 5.36 L when the temperature is 85°C, with no change in the pressure or amount of gas. What was the initial volume, in L, of the gas?
Answer Options:
[A] 4.00 L
[B] 6.00 L
[C] 4.84 L
[D] 5.00 L
Correct Answer
4.55 L
Answer:
Question: How many grams of Ne are present in 30.5 L STP?
Answer Options:
[A] 34.20 g
[B] 30.5 g
[C] 1.00 g
[D] 28.0 g
Correct Answer
27.48 g
Answer:
Question: When heated, KClO3, a solid forms solid KCl and O2 gas. A sample of KClO3 is heated and 190 mL of wet gas with a pressure of 770 mmHg is collected over water, at 26°C. At 26°C, the vapor pressure of water is 25 mmHg.
2 KClO3(s) → 2 KCl(s) + 3 O2(g)
What is the pressure of the dry O2 gas, in atm?
Answer Options:
[A] 0.80 atm
[B] 0.96 atm
[C] 1.00 atm
[D] 0.77 atm
Correct Answer
0.98 atm
Answer:
Question: A gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.00 atm. If helium added to the mixture increases the pressure to 1.80 atm, what is the partial pressure, in atmospheres, of the helium?
Answer Options:
[A] 1.00 atm
[B] 0.80 atm
[C] 1.80 atm
[D] 2.80 atm
Correct Answer
0.80 atm
Answer:
Question: According to the “What’s Your Move?” Resource, what is the minimum number of minutes of moderate aerobic activity needed per week for optimal health?
Answer Options:
[A] 90 minutes
[B] 150 minutes
[C] 240 minutes
[D] 300 minutes
Correct Answer
150 minutes
Answer:
Question: When food planning during the Coronavirus pandemic, what guidance does the MyPlate website provide?
Answer Options:
[A] Check what you have at home first.
[B] Make sure to use a home delivery shopping option.
[C] Investigate your shopping options.
[D] Include only non-perishable items.
[E] All of the above
[F] Only a and c.
Correct Answer
Only a and c.
Answer:
Question: Which food amounts “count as a cup in the Dairy Group”? [Note: There are more than one correct answer.]
Answer Options:
[A] 1 cup milk, calcium fortified soy milk or yogurt
[B] 1 1/2 oz hard cheese
[C] 1/2 cup shredded cheese
[D] 1 cup cottage cheese
[E] 1/2 cup ice cream
Correct Answer
1 cup milk, calcium fortified soy milk or yogurt
1 1/2 oz hard cheese
1/2 cup shredded cheese
Answer:
Question: Which food amounts “count as 1 cup of vegetables”? (Hints: “EAT HEALTHY” → “VEGETABLES” → “Cup of Vegetable Table”) [Note: There are more than one correct answer.]
Answer Options:
[A] 1/4 cup broccoli florets
[B] 3/4 cup cooked plantains
[C] 1 cup mashed sweet potato
[D] 1 medium carrots
[E] 2 small tomatoes
Correct Answer
1 cup mashed sweet potato
2 small tomatoes
Answer:
Question: If 1 mol of a gas is placed into a balloon under standard temperature and pressure (273 K and 1 atm), what volume would the balloon be?
Answer Options:
[A] 24.0 L
[B] 22.4 L
[C] 45.3 L
[D] 30.5 L
Correct Answer
22.4 L
Answer:
Question: A scuba diver at 40 ft below the ocean surface inhales 500 mL of compressed air from a scuba tank at a pressure of 3.20 atm and a temperature of 8°C. What is the final pressure of the air, in atm, if the lung when the gas expands to 1500 mL at a body temperature of 37°C, and the amount of gas does not change?
Answer Options:
[A] 2.4 atm
[B] 1.6 atm
[C] 0.80 atm
[D] 0.53 atm
Correct Answer
1.18 atm
Answer:
Part 64 – Natural Sciences / Chemistry, Nutrition & Human Biology
Question: Determine the molar mass of each of this gas. 2.99 g of this gas occupies 1.83 L at STP.
Answer Options:
[A] 28.96 g/mol
[B] 34.20 g/mol
[C] 44.01 g/mol
[D] 36.46 g/mol
Correct Answer
36.64 g/mol
Answer:
Question: A sample of Ne gas has a pressure of 719 mmHg with an unknown temperature. The same gas has a pressure of 275 mmHg when its temperature is 349 K, with no change in volume or amount of gas. What was the initial temperature, in Kelvin, of the gas?
Answer Options:
[A] 91.24 K
[B] 912.48 K
[C] 27.5 K
[D] 275 K
Correct Answer
912.48 K
Answer:
Question: A gas sample has a temperature of 32°C with an unknown volume. The same gas has a volume of 5.36 L when the temperature is 85°C, with no change in the pressure or amount of gas. What was the initial volume, in L, of the gas?
Answer Options:
[A] 4.00 L
[B] 6.00 L
[C] 4.84 L
[D] 5.00 L
Correct Answer
4.55 L
Answer:
Question: How many grams of Ne are present in 30.5 L STP?
Answer Options:
[A] 34.20 g
[B] 30.5 g
[C] 1.00 g
[D] 28.0 g
Correct Answer
27.48 g
Answer:
Question: When heated, KClO3, a solid forms solid KCl and O2 gas. A sample of KClO3 is heated and 190 mL of wet gas with a pressure of 770 mmHg is collected over water, at 26°C. At 26°C, the vapor pressure of water is 25 mmHg.
2 KClO3(s) → 2 KCl(s) + 3 O2(g)
What is the pressure of the dry O2 gas, in atm?
Answer Options:
[A] 0.80 atm
[B] 0.96 atm
[C] 1.00 atm
[D] 0.77 atm
Correct Answer
0.98 atm
Answer:
Question: A gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.00 atm. If helium added to the mixture increases the pressure to 1.80 atm, what is the partial pressure, in atmospheres, of the helium?
Answer Options:
[A] 1.00 atm
[B] 0.80 atm
[C] 1.80 atm
[D] 2.80 atm
Correct Answer
0.80 atm
Answer:
Question: According to the “What’s Your Move?” Resource, what is the minimum number of minutes of moderate aerobic activity needed per week for optimal health?
Answer Options:
[A] 90 minutes
[B] 150 minutes
[C] 240 minutes
[D] 300 minutes
Correct Answer
150 minutes
Answer:
Question: When food planning during the Coronavirus pandemic, what guidance does the MyPlate website provide?
Answer Options:
[A] Check what you have at home first.
[B] Make sure to use a home delivery shopping option.
[C] Investigate your shopping options.
[D] Include only non-perishable items.
[E] All of the above
[F] Only a and c.
Correct Answer
Only a and c.
Answer:
Question: Which food amounts “count as a cup in the Dairy Group”? [Note: There are more than one correct answer.]
Answer Options:
[A] 1 cup milk, calcium fortified soy milk or yogurt
[B] 1 1/2 oz hard cheese
[C] 1/2 cup shredded cheese
[D] 1 cup cottage cheese
[E] 1/2 cup ice cream
Correct Answer
1 cup milk, calcium fortified soy milk or yogurt
1 1/2 oz hard cheese
1/2 cup shredded cheese
Answer:
Question: Which food amounts “count as 1 cup of vegetables”? (Hints: “EAT HEALTHY” → “VEGETABLES” → “Cup of Vegetable Table”) [Note: There are more than one correct answer.]
Answer Options:
[A] 1/4 cup broccoli florets
[B] 3/4 cup cooked plantains
[C] 1 cup mashed sweet potato
[D] 1 medium carrots
[E] 2 small tomatoes
Correct Answer
1 cup mashed sweet potato
2 small tomatoes
Answer:
Question: If 1 mol of a gas is placed into a balloon under standard temperature and pressure (273 K and 1 atm), what volume would the balloon be?
Answer Options:
[A] 24.0 L
[B] 22.4 L
[C] 45.3 L
[D] 30.5 L
Correct Answer
22.4 L
Answer:
Question: A scuba diver at 40 ft below the ocean surface inhales 500 mL of compressed air from a scuba tank at a pressure of 3.20 atm and a temperature of 8°C. What is the final pressure of the air, in atm, if the lung when the gas expands to 1500 mL at a body temperature of 37°C, and the amount of gas does not change?
Answer Options:
[A] 2.4 atm
[B] 1.6 atm
[C] 0.80 atm
[D] 0.53 atm
Correct Answer
1.18 atm
Answer: