Homework Answers
1. There are 10 divisions between 0 and 20 in the thermometer. Hence, each division corresponds to a 2°C rise in temperature. The Mercury level is 20°C.
Hence, the thermometer reading shows 20°C
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for full credit CALCULATIONS AND PROBLEMS Show all ORSERIE SIGNIFICANT FIGURES RULES or of What is...
volume of the box in for full credit 11) CALCULATIONS AND PROBLEMS Show all ORSERIE SIGNIFICANT...
volume of the box in for full credit 11) CALCULATIONS AND PROBLEMS Show all ORSERIE SIGNIFICANT FIGURES RULES! in the correct number of What is the temperature recorded by the following thermometer significant figures? (5 ps) 1 inch 2. An unknown substance is soluble in alcohol and cyclohexane but not in water. It appears to melt between 50 and 55 degrees Celsius. When added to 500 ml. of water, a 2.30 sportion causes the volume to rise to 520 mL....
please answer all, and type please Problems and questions (show all calculations, correct significant figures and...
please answer all, and type please
Problems and questions (show all calculations, correct significant figures and units) 1. Why is it important to test the crucible for cracks before heating it? 2. Write the correct balanced equation for the dehydration (removal of water) of the magnesium sulfate hydrate obtained in Procedure B of this experiment. 3. How many moles are in 70.0 grams of potassium hydroxide? 4. A compound is formed when 0.300 moles of barium combine with 0.600 moles...
SHOW ALL WORK. Include the correct significant figures and units for full points. Useful equations and...
SHOW ALL WORK. Include the correct significant figures and units for full points. Useful equations and constants: heat lost/gained = (Volume) (Density)(AT)(specific heat capacity) (heat lost by hot water) - (heat gained by cold water) calorimeter constant = Density o - 1.00 g/mL Specific heat capacity (water) - 4.184 J/g °C AT cold 1. What is thermochemistry? (2 pts) 2. A student adds 5.00 mL of cold water to 5.00 mL of hot water in a test tube surrounded by...
lease write legibly. Round all final answers to the proper number of significant figures. Suppose you...
lease write legibly. Round all final answers to the proper number of significant figures. Suppose you carry out an experiment to measure for the following reaction Nule] + 11 ng]- $ 140a + 14 (1) You follow the procedure outlined in the lab manual and acquire the following data using 50.0 mL of 1.0 M NHOH and 50.0 mL of 1,0 M HCl (for a total mass of 1000 g) A Temperature of calorimeter and NH OH before mixing: 22.1°C...
Instructions Part 1. Problem Solving Do all of the following: • Determine the problem statement for...
Instructions Part 1. Problem Solving Do all of the following: • Determine the problem statement for the following problem. • Write a set of instructions (an algorithm) for computing the required values and making the desired conclusions. • Test your instructions by hand. Show your work. Problem: The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system, stated mathematically...
#3 PRE-LAB 1. Define Heat capacity - The amount of neat supplied to a given mass...
#3
PRE-LAB 1. Define Heat capacity - The amount of neat supplied to a given mass of material to produce unit change in temperature units = or to b. Specific heat - the amant of heat supplied to one unit mass of substance in order to raise the temperature by one Unit Units of specific heat is you or gik 2. In an experiment to determine the heat capacity of a Styrofoam cup calorimeter, 50 ml of water at 47...
Calculations are based on one trial. To receive full credit, you must SHOW ALL OF YOUR...
Calculations are based on one trial.
To receive full credit, you must SHOW ALL OF YOUR WORK. Answers that do not have complete work shown will be marked as incorrect. Workstation : Part A: Specific Heat of an unknown Metal 1. Unknown number 1326 18.09 8.37 2. Mass of unknown metal 9 3. Mass of empty calorimeter 9 Trial 1 Trial 2 Mass of calorimeter + water 45.23 g g Mass water 36.86 g g Initial Temperature of metal 100...
1.) The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the...
1.) The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the final temperature if 305J of heat is added to 41.7 g of this metal, initially at 20.0 ∘C? 2.) When 1723 J of heat energy is added to 42.3 g of hexane, C6H14, the temperature increases by 18.0 ∘C. Calculate the molar heat capacity of C6H14 3.) Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are...
please answer the full thing 1. What would be the AE (in kJ) for the following...
please answer the full thing
1. What would be the AE (in kJ) for the following reaction if 6.300 moles of H20 were decomposed? 2 H2O + 2H2 + O AE = 483.6 kJ (for reaction as written) 2. The value of AE for the reaction below is -336 kJ. Determine the amount of heat (in kJ) evolved when 13.0 g of HCl is formed. CH4(9) + 3 Cl2(g) - CHCI) + 3HCIO) 3. If 1.00 cal = 4.18 J,...
Beer's Law & Spectroscopy Practice Problems Show all work to receive full credit 100.0 1. The...
Beer's Law & Spectroscopy Practice Problems Show all work to receive full credit 100.0 1. The following data were collected from a colorimeter with solutions of manganese (I) chloride [a] Determine the absorbance of each of these standard Concentration (M) % Transmittance solutions, using A-log%T/100). 0.000 [b] Graph A vs. c. 0.010 96.6 [] By interpolating the graph, determine the concentration of an unknown manganese (II) chloride solution that transmits 0.030 90.2 85% of the light through this colorimeter 0.050...
volume of the box in for full credit 11) CALCULATIONS AND PROBLEMS Show all ORSERIE SIGNIFICANT FIGURES RULES! in the correct number of What is the temperature recorded by the following thermometer significant figures? (5 ps) 1 inch 2. An unknown substance is soluble in alcohol and cyclohexane but not in water. It appears to melt between 50 and 55 degrees Celsius. When added to 500 ml. of water, a 2.30 sportion causes the volume to rise to 520 mL....
please answer all, and type please
Problems and questions (show all calculations, correct significant figures and units) 1. Why is it important to test the crucible for cracks before heating it? 2. Write the correct balanced equation for the dehydration (removal of water) of the magnesium sulfate hydrate obtained in Procedure B of this experiment. 3. How many moles are in 70.0 grams of potassium hydroxide? 4. A compound is formed when 0.300 moles of barium combine with 0.600 moles...
SHOW ALL WORK. Include the correct significant figures and units for full points. Useful equations and constants: heat lost/gained = (Volume) (Density)(AT)(specific heat capacity) (heat lost by hot water) - (heat gained by cold water) calorimeter constant = Density o - 1.00 g/mL Specific heat capacity (water) - 4.184 J/g °C AT cold 1. What is thermochemistry? (2 pts) 2. A student adds 5.00 mL of cold water to 5.00 mL of hot water in a test tube surrounded by...
lease write legibly. Round all final answers to the proper number of significant figures. Suppose you carry out an experiment to measure for the following reaction Nule] + 11 ng]- $ 140a + 14 (1) You follow the procedure outlined in the lab manual and acquire the following data using 50.0 mL of 1.0 M NHOH and 50.0 mL of 1,0 M HCl (for a total mass of 1000 g) A Temperature of calorimeter and NH OH before mixing: 22.1°C...
Instructions Part 1. Problem Solving Do all of the following: • Determine the problem statement for the following problem. • Write a set of instructions (an algorithm) for computing the required values and making the desired conclusions. • Test your instructions by hand. Show your work. Problem: The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system, stated mathematically...
#3
PRE-LAB 1. Define Heat capacity - The amount of neat supplied to a given mass of material to produce unit change in temperature units = or to b. Specific heat - the amant of heat supplied to one unit mass of substance in order to raise the temperature by one Unit Units of specific heat is you or gik 2. In an experiment to determine the heat capacity of a Styrofoam cup calorimeter, 50 ml of water at 47...
Calculations are based on one trial.
To receive full credit, you must SHOW ALL OF YOUR WORK. Answers that do not have complete work shown will be marked as incorrect. Workstation : Part A: Specific Heat of an unknown Metal 1. Unknown number 1326 18.09 8.37 2. Mass of unknown metal 9 3. Mass of empty calorimeter 9 Trial 1 Trial 2 Mass of calorimeter + water 45.23 g g Mass water 36.86 g g Initial Temperature of metal 100...
please answer the full thing
1. What would be the AE (in kJ) for the following reaction if 6.300 moles of H20 were decomposed? 2 H2O + 2H2 + O AE = 483.6 kJ (for reaction as written) 2. The value of AE for the reaction below is -336 kJ. Determine the amount of heat (in kJ) evolved when 13.0 g of HCl is formed. CH4(9) + 3 Cl2(g) - CHCI) + 3HCIO) 3. If 1.00 cal = 4.18 J,...
Beer's Law & Spectroscopy Practice Problems Show all work to receive full credit 100.0 1. The following data were collected from a colorimeter with solutions of manganese (I) chloride [a] Determine the absorbance of each of these standard Concentration (M) % Transmittance solutions, using A-log%T/100). 0.000 [b] Graph A vs. c. 0.010 96.6 [] By interpolating the graph, determine the concentration of an unknown manganese (II) chloride solution that transmits 0.030 90.2 85% of the light through this colorimeter 0.050...
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