Using the data in Part C, calculate the following and complete the table below.
Using the data in Part C, calculate the following and complete the table below. (See pg 62 in the lab manual). Use the Mean Heat Capacity of the Calorimeter Calculated in Row 4.
Homework Answers
Trial #1:
11. Mass of water = (38.7 -11.7) g = 27 g
12. Mass of NaHCO3 = (40.0 - 38.7) g = 1.3 g
13. Heat of reaction = total mass of solution × specific heat capacity of solution × temperature change = 28.3 g × 4.18 J/g 0 C × (20.1- 20.5) 0 C = - 47.3 J
14. Moles of NaHCO3 = mass / molar mass = 1.3 g/ (84 g/ mole) = 0.0155 mole
15. Molar enthalpy of solution = - 47.3 J/ (0.0155 mole) = - 3052 J/ mole = - 3.052 kJ/ mole
Trial #2:
11. Mass of water = (38.9 - 11.9) g = 27 g
12. Mass of NaHCO3 = ( 40.3 - 38.9) g = 1.4 g
13. Heat of reaction = 28.4 × 4.18 × (20.7 - 21.2) J = - 59.356 J
14. Moles of NaHCO3 = 1.4/ 84 mole = 0.0167 mole
15. Molar enthalpy = - 59.356/ 0.0167 J/ mole = - 3554 J/ mole = - 3.554 kJ/ mole
16. (- 3.554 - 3.052)/2 = - 3.303 kJ/ mole
Add Answer to:
Using the data in Part C, calculate the following and complete the table below.
can someone check my math for #59 and #60? i feel like my answers are incorrect. Part IV. Specific Heat Capacity o...
can someone check my math for #59 and #60? i feel like my
answers are incorrect.
Part IV. Specific Heat Capacity of an Unknown Metal 52. Volume of water 100 mL 53. Calculate the mass of water 54. Mass of unknown metal 05.a 55. Initial temperature of water in calorimeter, T "C 56. Initial temperature of metal before placing in calorimeter, T C 24.8 57. Final temperature of the water, T C 58. Final temperature of the metal, T C...
Lab 3: Homework Assignment (30 pts.) Using the data from Table 2 below, calculate the statistics...
Lab 3: Homework Assignment (30 pts.) Using the data from Table 2 below, calculate the statistics and fill in the cells of Worksheet 1 below. Use these data to make a table in MS Excel that lists the population name (Lake) and the sample statistics for each population including mean ducklings fledged, median, DF, SS, s2, SD, SE, and tos(SE) for each of the populations. (10 pts) Use Table 3 below as a template to construct your table in MS...
Date: Pre-Lab Questions Heat Capacity ra calorimeter with the following data: Calculate B, the calorimeter const Sh...
Date: Pre-Lab Questions Heat Capacity ra calorimeter with the following data: Calculate B, the calorimeter const Show calculations or u calculations on the back of this page DATA 3.9639 72.850 g Mass of empty calorimeter Mass of calorimeter + 70 ml water 100.942 g 23.09 °C 100.00 °C Mass of calorimeter + 70 ml water + 30 mL hot water Initial temperature of water in calorimeter Temperature of the boiling water bath Final temperature of calorimeter + added hot water...
Get the average of delta H from both trials using the data table above. Then solve...
Get the average of delta H from both trials using the data table
above. Then solve for q-surroundings using the formula and the
numbers from the data table above. Thanks!
Data Table 1. Mass of empty calorimeter (8) 2. Mass of calorimeter + acid (8) 3. Mass of acid (2-1) (b) 4. Mass of Mg ribbon (8) 5.T(C) 6. T (C) Trial 1 Trial 2 63.357 1163.340 212.343 213. 112 -49.9186 49.772 0.15 0.15 21.87 23.69 36.13 134,37 Calculations Assumptions...
Write a complete lab report on how to determine an unknown sample in a lab using...
Write a complete lab report on how to determine an unknown sample in a lab using the data below. You must specify the error made and how they were corrected. (8 points) A calorimeter is made from 0.15 kg of aluminum and contains 0.2 kg of water. Initially, the calorimeter and water are at 18°C. A 0.04 kg mass of unknown material is heated to 97°C and added to the water. At equilibrium, everything is at 22°C. What is the...
Complete PART (b) ONLY. Please use answer from Part (a). Please complete this using EXCEL; SHow...
Complete PART (b) ONLY. Please use answer from Part
(a). Please complete this using EXCEL; SHow the steps/ excel
calculations.
Month
Actual Demand
1
62
2
65
3
67
4
68
5
71
6
73
7
76
8
78
9
78
10
80
11
84
12
85
part (a)
MY answer to Part (a):
Part (b)
(b) Now calculate all the measures of
forecasting accuracy listed below for the single exponential
smoothing forecast completed in part (a)
-i) MAPE (Mean...
Calculate deltaGϴ for the following balanced reaction at 25 °C using the data in the table...
Calculate deltaGϴ for the following balanced reaction at 25 °C
using the data in the table below.
Calculate AG for the following balanced reaction at 25 °C using the data in the table below. CO(NH2)2(s) + H2O(l) → CO2(g) + 2 NH3(g) A:HⓇ (kJ mor') -333.19 Se (J K-'mol-') 104.6 CO(NH2)2(s) H2O(1) -285.9 69.96 CO2(g) -393.5 213.6 NH3(g) -46.19 192.5
You may skip part (e) (x -R)2 0 4 (a) Complete the entries in the table....
You may skip part (e)
(x -R)2 0 4 (a) Complete the entries in the table. Put the sums in the last row. What are the sample means x and y? (b) Calculate bi and b2 using (2.7) and (2.8) and state their interpretation. (c) Compute )vi. Using these numerical values, show that (d) Use the least squares estimates from part (b) to compute the fitted values of y, and plete the remainder of the table below. Put the sums...
mON Pre-Lab Questions Heat Capacity Calculate B, the calorimeter constant, for a calorimeter with the following...
mON Pre-Lab Questions Heat Capacity Calculate B, the calorimeter constant, for a calorimeter with the following data: Show calculations on the back of this page. DATA Mass of empty calorimeter Mass of calorimeter +70 3.963 g 72.850 g mL water Mass of calorimeter+70 mL water+30 mL hot water Initial temperature in calorimeter Temperature of the boiling water bath Final temperature of calorimeter + added hot water 100.942 g water 23.09 °C 100.00 °C 43.99 °C CALCULATIONS Mass of cool water...
[2] The mean heat capacity (C) between two temperatures Tre and I can be calculated from...
[2] The mean heat capacity (C) between two temperatures Tre and I can be calculated from ,(T)dT T-Tref (a) Use the data for the heat capacity for propane provided in the following table to calculate mean heat capacities from 400 to 1500 K using 298.3 K as the reference temperature. Fit a polynomial of suitable degree to the heat capacity data and use the resulting polynomial to evaluate the integral. (b) Calculate the mean heat capacity of propane at 1500...
can someone check my math for #59 and #60? i feel like my
answers are incorrect.
Part IV. Specific Heat Capacity of an Unknown Metal 52. Volume of water 100 mL 53. Calculate the mass of water 54. Mass of unknown metal 05.a 55. Initial temperature of water in calorimeter, T "C 56. Initial temperature of metal before placing in calorimeter, T C 24.8 57. Final temperature of the water, T C 58. Final temperature of the metal, T C...
Lab 3: Homework Assignment (30 pts.) Using the data from Table 2 below, calculate the statistics and fill in the cells of Worksheet 1 below. Use these data to make a table in MS Excel that lists the population name (Lake) and the sample statistics for each population including mean ducklings fledged, median, DF, SS, s2, SD, SE, and tos(SE) for each of the populations. (10 pts) Use Table 3 below as a template to construct your table in MS...
Date: Pre-Lab Questions Heat Capacity ra calorimeter with the following data: Calculate B, the calorimeter const Show calculations or u calculations on the back of this page DATA 3.9639 72.850 g Mass of empty calorimeter Mass of calorimeter + 70 ml water 100.942 g 23.09 °C 100.00 °C Mass of calorimeter + 70 ml water + 30 mL hot water Initial temperature of water in calorimeter Temperature of the boiling water bath Final temperature of calorimeter + added hot water...
Get the average of delta H from both trials using the data table
above. Then solve for q-surroundings using the formula and the
numbers from the data table above. Thanks!
Data Table 1. Mass of empty calorimeter (8) 2. Mass of calorimeter + acid (8) 3. Mass of acid (2-1) (b) 4. Mass of Mg ribbon (8) 5.T(C) 6. T (C) Trial 1 Trial 2 63.357 1163.340 212.343 213. 112 -49.9186 49.772 0.15 0.15 21.87 23.69 36.13 134,37 Calculations Assumptions...
Write a complete lab report on how to determine an unknown sample in a lab using the data below. You must specify the error made and how they were corrected. (8 points) A calorimeter is made from 0.15 kg of aluminum and contains 0.2 kg of water. Initially, the calorimeter and water are at 18°C. A 0.04 kg mass of unknown material is heated to 97°C and added to the water. At equilibrium, everything is at 22°C. What is the...
Complete PART (b) ONLY. Please use answer from Part
(a). Please complete this using EXCEL; SHow the steps/ excel
calculations.
Month
Actual Demand
1
62
2
65
3
67
4
68
5
71
6
73
7
76
8
78
9
78
10
80
11
84
12
85
part (a)
MY answer to Part (a):
Part (b)
(b) Now calculate all the measures of
forecasting accuracy listed below for the single exponential
smoothing forecast completed in part (a)
-i) MAPE (Mean...
Calculate deltaGϴ for the following balanced reaction at 25 °C
using the data in the table below.
Calculate AG for the following balanced reaction at 25 °C using the data in the table below. CO(NH2)2(s) + H2O(l) → CO2(g) + 2 NH3(g) A:HⓇ (kJ mor') -333.19 Se (J K-'mol-') 104.6 CO(NH2)2(s) H2O(1) -285.9 69.96 CO2(g) -393.5 213.6 NH3(g) -46.19 192.5
You may skip part (e)
(x -R)2 0 4 (a) Complete the entries in the table. Put the sums in the last row. What are the sample means x and y? (b) Calculate bi and b2 using (2.7) and (2.8) and state their interpretation. (c) Compute )vi. Using these numerical values, show that (d) Use the least squares estimates from part (b) to compute the fitted values of y, and plete the remainder of the table below. Put the sums...
mON Pre-Lab Questions Heat Capacity Calculate B, the calorimeter constant, for a calorimeter with the following data: Show calculations on the back of this page. DATA Mass of empty calorimeter Mass of calorimeter +70 3.963 g 72.850 g mL water Mass of calorimeter+70 mL water+30 mL hot water Initial temperature in calorimeter Temperature of the boiling water bath Final temperature of calorimeter + added hot water 100.942 g water 23.09 °C 100.00 °C 43.99 °C CALCULATIONS Mass of cool water...
[2] The mean heat capacity (C) between two temperatures Tre and I can be calculated from ,(T)dT T-Tref (a) Use the data for the heat capacity for propane provided in the following table to calculate mean heat capacities from 400 to 1500 K using 298.3 K as the reference temperature. Fit a polynomial of suitable degree to the heat capacity data and use the resulting polynomial to evaluate the integral. (b) Calculate the mean heat capacity of propane at 1500...
Most questions answered within 3 hours.
-
Distinguish among mandatory, permissive, and illegal bargaining
subjects
HR class
asked 47 seconds from now -
A 1.2 kg mass in placed on the end of a 1.4 m string. One end...
asked 8 minutes ago -
A researcher wishes to estimate the proportion of adults who
have high-speed Internet access. What size...
asked 18 minutes ago -
Let X be uniformly distributed in the unit interval [0,2].
Consider the random variable Y=g(x), where...
asked 20 minutes ago -
1) ls it true that relationships are important in late
adulthood?
2) what sort of relationships...
asked 41 minutes ago -
The figure shows a section of insulating rod of radius R_1=2.3mm
and length L=11m inside a...
asked 42 minutes ago -
You would like to buy a house that costs $350,000. You have
$50,000 in cash that...
asked 45 minutes ago -
In response to high inflation in the United States, let us
assume that the Federal Reserve...
asked 2 hours ago -
Which of the following is not an example of the public
health sector's responsibility?
a.immunization of...
asked 2 hours ago -
Search the Internet to find (at least 2 websites) related to the
general field of malware...
asked 4 hours ago -
A solution of methanoic acid, HCOOH (Ka = 1.8 ×
10-4) has pH 2.69. What amount...
asked 4 hours ago -
Nike Becomes a Global Citizen
Craig E. Johnson
In 1962, Stanford University student Phil Knight came...
asked 5 hours ago