There are two flasks on the bench top, one flask contains a 0.50 M NaCl solution...
There are two flasks on the bench top, one flask contains a 0.50 M NaCl solution and the other contains a 0.50 M ethylene glycol solution. How would you determine which flask was which. No tasting allowed in lab.
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There are two flasks on the bench top, one flask contains a 0.50
M NaCl solution...
Two flasks of equal volume and at the same temperature contain different gases. One flask contains...
Two flasks of equal volume and at the same temperature contain different gases. One flask contains 10.0 g of Neand the other flask contains 10.0 g of He. Which of the following statements are correct? Check all that apply. Check all that apply. The densities of the gases are the same. The flask that contains helium has a higher pressure than the flask that contains neon. Both flasks contain the same number of atoms. The pressures in the flasks are...
Suppose you have two unlabeled flasks, and each flask contains one of these two compounds:Can you...
Suppose you have two unlabeled flasks, and each flask contains one of these two compounds:Can you differentiate the compounds using a UV spectrophotometer? Select the true statement.The lambdamax of the compound with 2 conjugated bonds appears at a longer wavelength than does the lambdamax of the compound with 3 conjugated bonds. The lambdamax of the compound with 3 conjugated bonds appears at a longer wavelength than does the lambdamax of thecompound with 2 conjugated bonds.The two compounds cannot be differentiated...
For questions 2 to 4 d, consider two 2.00 L flasks, one of which contains 0.250...
For questions 2 to 4 d, consider two 2.00 L flasks, one of which contains 0.250 mole of O2 gas at 50.0 deg C and the other of which contains 0.500 mole of H2 gas at 50.0 deg C. 4. a. In which flask is the ratio of molecular volume (volume occupied by the molecules touching one another in a condensed state) to gaseous sample volume (volume occupied by the entire gaseous sample) greater? (2 pt) b. ...
You have two flasks of equal volume. Flask A contains hydrogen gas (H2) at 0°C and...
You have two flasks of equal volume. Flask A contains hydrogen gas (H2) at 0°C and 1 atm of pressure. Flask B contains CO2 gas at 25°C and 2 atm pressure. a) What is the ratio of the average kinetic energy per molecule of H2/CO2? b) What is the ratio of the average kinetic velocity of H2/CO2 molecules? c) What is the ratio of the number of molecules of CO2/H2? d) What is the mass ratio of CO2/H2?
a flask contains two compartments (A and B) with equal volumes of solution separated by a...
a flask contains two compartments (A and B) with equal volumes of solution separated by a semipermeable membrane. compartment a is filled with 2.0 M NaCl and B is filled with 2.0M glucose. What happens to the volume of the compartments over time? Briefly explain your reasoning
Consider two 1 L flasks, one containing O2, the other containing He, each at STP. Which...
Consider two 1 L flasks, one containing O2, the other containing He, each at STP. Which one of the following statements is false regarding these gases? O Each flask contains the same number of atoms or molecules. O The gases in each flask have the same average kinetic energy O The gases in each flask have the same density. O The pressure in each flask is the same O The temperature of the gases in each fask is 273.15 K
3. Dilutions: Saline solution, used in IV bags, is 0.900% (m/v) NaCl. Suppose that, as a...
3. Dilutions: Saline solution, used in IV bags, is 0.900% (m/v) NaCl. Suppose that, as a hospital technician, you are asked to prepare 200. L of this solution for use that afternoon. The stockroom contains a supply of concentrated (35.096 m/v) NaCl solution available for use. Describe in words or pictures how you would prepare this solution, supporting your procedure with a calculation. Available materials include distilled water and a volumetric container of the appropriate size that you need (just...
A 250 mL flask contains a 8.0% (m/v) nitric acid solution. Which TWO of the following...
A 250 mL flask contains a 8.0% (m/v) nitric acid solution. Which TWO of the following ratios are NOT equivalent to the concentration? Select one or more: 8g HNO/100 mL soln 20 g HNO3/250 mL soln 80 g HNO/1 L soln 40 g HNO,/0.50 L soln 8 g HNO/1 mL soln 80 mg HN0/1 mL soln 0.08 g HNO/1 mL soln 8 g HNO3/1 L soln
3. Dilutions: Saline solution, used in IV bags, is 0.900 % (m/v) NaCl. Suppose that, as...
3. Dilutions: Saline solution, used in IV bags, is 0.900 % (m/v) NaCl. Suppose that, as a hospital technician, you are asked to prepare 200. L of this solution for use that afternoon. The stockroom contains a supply of concentrated (35.0% m/v) NaCl solution available for use. Describe in words or pictures how you would prepare this solution, supporting your procedure with a calculation. Available materials include distilled water and a volumetric container of the appropriate size that you need...
A 0.300 M solution of NaCl that contains 0.150 mole of NaCl would have a volume,...
A 0.300 M solution of NaCl that contains 0.150 mole of NaCl would have a volume, in mL, of Group of answer choices 5.00 × 103 mL 0.045 mL 5.00 × 102 mL 45.0 mL
Suppose you have two unlabeled flasks, and each flask contains one of these two compounds:Can you differentiate the compounds using a UV spectrophotometer? Select the true statement.The lambdamax of the compound with 2 conjugated bonds appears at a longer wavelength than does the lambdamax of the compound with 3 conjugated bonds. The lambdamax of the compound with 3 conjugated bonds appears at a longer wavelength than does the lambdamax of thecompound with 2 conjugated bonds.The two compounds cannot be differentiated...
Consider two 1 L flasks, one containing O2, the other containing He, each at STP. Which one of the following statements is false regarding these gases? O Each flask contains the same number of atoms or molecules. O The gases in each flask have the same average kinetic energy O The gases in each flask have the same density. O The pressure in each flask is the same O The temperature of the gases in each fask is 273.15 K
3. Dilutions: Saline solution, used in IV bags, is 0.900% (m/v) NaCl. Suppose that, as a hospital technician, you are asked to prepare 200. L of this solution for use that afternoon. The stockroom contains a supply of concentrated (35.096 m/v) NaCl solution available for use. Describe in words or pictures how you would prepare this solution, supporting your procedure with a calculation. Available materials include distilled water and a volumetric container of the appropriate size that you need (just...
A 250 mL flask contains a 8.0% (m/v) nitric acid solution. Which TWO of the following ratios are NOT equivalent to the concentration? Select one or more: 8g HNO/100 mL soln 20 g HNO3/250 mL soln 80 g HNO/1 L soln 40 g HNO,/0.50 L soln 8 g HNO/1 mL soln 80 mg HN0/1 mL soln 0.08 g HNO/1 mL soln 8 g HNO3/1 L soln
3. Dilutions: Saline solution, used in IV bags, is 0.900 % (m/v) NaCl. Suppose that, as a hospital technician, you are asked to prepare 200. L of this solution for use that afternoon. The stockroom contains a supply of concentrated (35.0% m/v) NaCl solution available for use. Describe in words or pictures how you would prepare this solution, supporting your procedure with a calculation. Available materials include distilled water and a volumetric container of the appropriate size that you need...
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