Pre Lab report for experiment 5 questions and problems
1. Why is it important for there to be enough water in the calorimeter to completely cover the metal sample?
I am having a hard time answering any of these questions. If anyone could provide answers it would be very helpful.
Homework Answers
1.
It ensures that all the heat must enter the water, which in turn raises its temperature. Suppose there was not enough water to cover the sample completely. In that case, some of the heat could be lost directly to the air, resulting in a (potentially gross) underestimate of the heating value of the sample.
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A ...
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A calorimeier is a device u s eol to measure hot of roactisn th lainer wn th vr meni o insulated wall's to prevent hret exchange he enviran 2. Why is specific heat an intensive property? energy at o particular temperature 'is the some Its 9uanhhy towhich no physical alimen sian is agsian eof Nomaler heuw mach alaminunh, Is abiliy to aborb heat...
Determine the ratio of ion concentrations - Electrolytes - Lab Questions
I'm having a really hard time figuring these questions out. The very first question I'm not entirely sure it's even correct. Can anyone help me and as well as explain the answers? Questions 8 - 15. Thanks in advance!
need help on these questions. INSTRUCTOR REPORT FOR EXPERIMENT 5 Calorimetry and Specific Heat Measurements and...
need help on these questions.
INSTRUCTOR REPORT FOR EXPERIMENT 5 Calorimetry and Specific Heat Measurements and Calculations ... TRIAL 1 18.02g 1. Mass of metal sample 2.23 g . 2. Mass of ealorimeter (styrofoam cupa) 90.73 - 2.23 3. Mass of styrofoam cups + water 90.73g 88.5 g 4. Mas of water Sun show calculation setup 5. Initial water temperature 6. Temperature of heated metal sample 22'0 90 abc 7. Final temperature of water and metal 8. Change in temperature,...
For my gen physics ii lab, we are doing an RC circuit lab. I am having...
For my gen physics ii lab, we are doing an RC circuit lab. I am having a hard time with these questions and i was wondering if someone could help? #1) Does RC have unit of time? #2) When the key is switched from position A to B, the capacitor discharges instantaneously, explain. if someone could help with these questions, id be very thankful!
CHEM 1405- Experiment 4: Matter and Energy 71 Roll # Name: Pre-lab Questions Section: Calculate the...
CHEM 1405- Experiment 4: Matter and Energy 71 Roll # Name: Pre-lab Questions Section: Calculate the amout of heat water absorbs from a piece of hot metal using the following experimental data: 75.0 g cold water is taken in a calorimeter. The initial temperature of the water in the calorimeter is 21.2°C. To the calorimeter containing cold water 29.458 g metal at 98.9°C is added. The final temperature of the contents of the calorimeter is measured to be 29.5 °C....
Pre-Lab Questions: Thermochemistry MUST be completed before an experiment is started. Show all work and be...
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DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questio...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. 1. How many moles of hydrogen are present in a 43.50 mL sample at 25.5 °C and 772.8 torr? (assume the hydrogen is dry) 2. What is the mass of a piece of magnesium wire which produces 38.25 mL of hydrogen gas collected over water at 22.0 °C...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
NAME DATE LAB PARTNER . EXPERIMENT 7 뎐 OBJECT The object of this experiment is to...
NAME DATE LAB PARTNER . EXPERIMENT 7 뎐 OBJECT The object of this experiment is to deterimine the specific heats of two differert metals by calorimetry method of mixtures. Calorimeter, steam generator (boiler) and tripod stand, Bunsen burner and lighter, triple beam balance, two 0-100 °C thermometers, unknown metal no. 1, unknown metal no. 2, stand with horizontal rod. DIAGRAM . Add water to the boiler until it is approximately two thirds full. Place it on the tripod. Place the...
Please answer the Pre-Lab questions regarding calorimetry. Suggest possible ways to improve the calorimeter, including materials...
Please answer the Pre-Lab questions regarding calorimetry.
Suggest possible ways to improve the calorimeter, including materials that could be used, and different approaches that would lead to the capture of the most heat from the burning peanut. List your responses here and on the board. (Post-lab Question 3) Plan and design an improved calorimeter. Your team should make a sketch of your idea here and in your notebooks. Construct (build) your improved calorimeter using the materials provided. Test your new...
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A calorimeier is a device u s eol to measure hot of roactisn th lainer wn th vr meni o insulated wall's to prevent hret exchange he enviran 2. Why is specific heat an intensive property? energy at o particular temperature 'is the some Its 9uanhhy towhich no physical alimen sian is agsian eof Nomaler heuw mach alaminunh, Is abiliy to aborb heat...
need help on these questions.
INSTRUCTOR REPORT FOR EXPERIMENT 5 Calorimetry and Specific Heat Measurements and Calculations ... TRIAL 1 18.02g 1. Mass of metal sample 2.23 g . 2. Mass of ealorimeter (styrofoam cupa) 90.73 - 2.23 3. Mass of styrofoam cups + water 90.73g 88.5 g 4. Mas of water Sun show calculation setup 5. Initial water temperature 6. Temperature of heated metal sample 22'0 90 abc 7. Final temperature of water and metal 8. Change in temperature,...
CHEM 1405- Experiment 4: Matter and Energy 71 Roll # Name: Pre-lab Questions Section: Calculate the amout of heat water absorbs from a piece of hot metal using the following experimental data: 75.0 g cold water is taken in a calorimeter. The initial temperature of the water in the calorimeter is 21.2°C. To the calorimeter containing cold water 29.458 g metal at 98.9°C is added. The final temperature of the contents of the calorimeter is measured to be 29.5 °C....
Pre-Lab Questions: Thermochemistry MUST be completed before an experiment is started. Show all work and be sure to include units. Q What is the difference between heat capacity and specifie heat? What are the units for each? Q2. What is a calorimeter, and why is it used in thermochemistry? Why should you measure the specific h the calorimeter? Q3. What is the sign +or-) of the temperature change for a piece of hot metal when it is placed in cold...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. 1. How many moles of hydrogen are present in a 43.50 mL sample at 25.5 °C and 772.8 torr? (assume the hydrogen is dry) 2. What is the mass of a piece of magnesium wire which produces 38.25 mL of hydrogen gas collected over water at 22.0 °C...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
NAME DATE LAB PARTNER . EXPERIMENT 7 뎐 OBJECT The object of this experiment is to deterimine the specific heats of two differert metals by calorimetry method of mixtures. Calorimeter, steam generator (boiler) and tripod stand, Bunsen burner and lighter, triple beam balance, two 0-100 °C thermometers, unknown metal no. 1, unknown metal no. 2, stand with horizontal rod. DIAGRAM . Add water to the boiler until it is approximately two thirds full. Place it on the tripod. Place the...
Please answer the Pre-Lab questions regarding calorimetry.
Suggest possible ways to improve the calorimeter, including materials that could be used, and different approaches that would lead to the capture of the most heat from the burning peanut. List your responses here and on the board. (Post-lab Question 3) Plan and design an improved calorimeter. Your team should make a sketch of your idea here and in your notebooks. Construct (build) your improved calorimeter using the materials provided. Test your new...
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