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Question 4 2 pts In lab, a student weighed out 1.576 g of unknown in a beaker. The student added ...
Question 5 2.5 pts In lab, a student weighed out 3.852 g of an unknown salt....
Question 5 2.5 pts In lab, a student weighed out 3.852 g of an unknown salt. Her coffee cup calorimeter weighed 39.845 g. After adding water it weighed 83.141 g. Before the addition of salt, the temperature of the water in the coffee cup was 17°C. After all the salt dissolved the maximum temperature was 21.7°C. Calculate the enthalpy of solution for the salt, AHIn Report your answer in J. You can practice the math using this virtual lab. Note:...
Question 5 2.5 pts In lab, a student weighed out 3.852 g of an unknown salt....
Question 5 2.5 pts In lab, a student weighed out 3.852 g of an unknown salt. Her coffee cup calorimeter weighed 39.845 g. After adding water it weighed 83.141 g. Before the addition of salt, the temperature of the water in the coffee cup was 17°C. After all the salt dissolved the maximum temperature was 21.7°C. Calculate the enthalpy of solution for the salt, AHIn Report your answer in J. You can practice the math using this virtual lab. Note:...
Question 5 2.5 pts In lab, a student weighed out 3.578 g of an unknown salt. Her coffee cup calorimeter weighed 38.248...
Question 5 2.5 pts In lab, a student weighed out 3.578 g of an unknown salt. Her coffee cup calorimeter weighed 38.248 g. After adding water it weighed 85.784 g. Before the addition of salt, the temperature of the water in the coffee cup was 21° C. After all the salt dissolved the maximum temperature was 18.3 °C. Calculate the enthalpy of solution for the salt, AHln. Report your answer in J. You can practice the math using this virtual...
In lab, a student weighed out 3.605 g of an unknown salt. Her coffee cup calorimeter...
In lab, a student weighed out 3.605 g of an unknown salt. Her coffee cup calorimeter weighed 38.959 g. After adding water it weighed 84.268 g. Before the addition of salt, the temperature of the water in the coffee cup was 19.9° C. After all the salt dissolved the maximum temperature was 17.4° C. Calculate the enthalpy of solution for the salt, AHsin Report your answer in J. You can practice the math using this virtual lab. Note: Use the...
In lab, a student weighed out 3.281 g of an unknown salt. Her coffee cup calorimeter...
In lab, a student weighed out 3.281 g of an unknown salt. Her coffee cup calorimeter weighed 36.763 g. After adding water it weighed 94.732 g. Before the addition of salt, the temperature of the water in the coffee cup was 19.5 d e g r e e s C . After all the salt dissolved the maximum temperature was 25 d e g r e e s C . Calculate the enthalpy of solution for the salt, d e...
How do you calculate questions 1 - 8 for the data analysis section? A. Precipitation of CaC,O, H,O from the Salt...
How do you calculate questions 1 - 8 for the data analysis
section?
A. Precipitation of CaC,O, H,O from the Salt Mixture Unknown number Trial 1 Trial 2 1. Mass of beaker (g) 59.45 59.45 5.oS Mass of beaker and salt mixture (g) 2. 3. Mass of salt mixture (g) I, oo oS 4. Mass of filter paper (g 5. Mass of filter paper and product after air-dried or oven-dried (g) 0, 35 6. Mass of dried product (g) 7....
Question 7 2 pts In the lab, a student measures a teaspoon of an unknown liquid....
Question 7 2 pts In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of 7.80 g and a volume of 5.36 mL. How many teaspoons would be in 1.45 kg of this unknown liquid? Round your answer to the nearest whole number and do not include units in your answer.
4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown...
4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown to the student, the balance was not zeroed but weighed 0.100 g too high throughout the experiment. Would the calculated val- ue for the density of the unknown liquid be correct? That is, would it be equal to, higher than, or lower than the true value. Explain your answer in clear and correct English. 16 LABORATORY EXPERIMENTS IN GENERAL CHEMISTRY ed in question 4...
Question 5 2.5 pts In lab, a student weighed out 3.852 g of an unknown salt. Her coffee cup calorimeter weighed 39.845 g. After adding water it weighed 83.141 g. Before the addition of salt, the temperature of the water in the coffee cup was 17°C. After all the salt dissolved the maximum temperature was 21.7°C. Calculate the enthalpy of solution for the salt, AHIn Report your answer in J. You can practice the math using this virtual lab. Note:...
Question 5 2.5 pts In lab, a student weighed out 3.852 g of an unknown salt. Her coffee cup calorimeter weighed 39.845 g. After adding water it weighed 83.141 g. Before the addition of salt, the temperature of the water in the coffee cup was 17°C. After all the salt dissolved the maximum temperature was 21.7°C. Calculate the enthalpy of solution for the salt, AHIn Report your answer in J. You can practice the math using this virtual lab. Note:...
Question 5 2.5 pts In lab, a student weighed out 3.578 g of an unknown salt. Her coffee cup calorimeter weighed 38.248 g. After adding water it weighed 85.784 g. Before the addition of salt, the temperature of the water in the coffee cup was 21° C. After all the salt dissolved the maximum temperature was 18.3 °C. Calculate the enthalpy of solution for the salt, AHln. Report your answer in J. You can practice the math using this virtual...
In lab, a student weighed out 3.605 g of an unknown salt. Her coffee cup calorimeter weighed 38.959 g. After adding water it weighed 84.268 g. Before the addition of salt, the temperature of the water in the coffee cup was 19.9° C. After all the salt dissolved the maximum temperature was 17.4° C. Calculate the enthalpy of solution for the salt, AHsin Report your answer in J. You can practice the math using this virtual lab. Note: Use the...
How do you calculate questions 1 - 8 for the data analysis
section?
A. Precipitation of CaC,O, H,O from the Salt Mixture Unknown number Trial 1 Trial 2 1. Mass of beaker (g) 59.45 59.45 5.oS Mass of beaker and salt mixture (g) 2. 3. Mass of salt mixture (g) I, oo oS 4. Mass of filter paper (g 5. Mass of filter paper and product after air-dried or oven-dried (g) 0, 35 6. Mass of dried product (g) 7....
Question 7 2 pts In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of 7.80 g and a volume of 5.36 mL. How many teaspoons would be in 1.45 kg of this unknown liquid? Round your answer to the nearest whole number and do not include units in your answer.
4. Suppose that a student performed the experiment and calculations perfectly as directed except that, unknown to the student, the balance was not zeroed but weighed 0.100 g too high throughout the experiment. Would the calculated val- ue for the density of the unknown liquid be correct? That is, would it be equal to, higher than, or lower than the true value. Explain your answer in clear and correct English. 16 LABORATORY EXPERIMENTS IN GENERAL CHEMISTRY ed in question 4...
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