Use the following experimental data to solve the questions below: mass of water = 98.731 g...
Use the following experimental data to solve the questions below: mass of water = 98.731 g mass of goldfish before heating = 25.987 g specific heat of water = 4.184 J/g ⁰C mass of goldfish after heating = 25.761 g initial temperature of water = 21.31 ⁰C final temperature of water = 26.77 ⁰C A)Calculate the energy of the burning gold fish reaction (in Joules). Do not include units in your answer. Do not convert to scientific notation. No credit will be given for an answer given with an incorrect number of significant figures. B) Determine the energy content per gram of the gold fish (Calories/gram). Do not include units in your answer. Do not convert to scientific notation. No credit will be given for an answer given with an incorrect number of significant figures.
Homework Answers
Add Answer to:
Use the following experimental data to solve the questions
below: mass of water = 98.731 g...
A block of an alloy of mass 33.0 g and at a temperature of 295.58 K...
A block of an alloy of mass 33.0 g and at a temperature of 295.58 K is placed in a calorimeter containing 50.0 g of water at 344.84 K. If the final temperature of the alloy and water is 326.33 K, calculate the specific heat (in J/g/K) of the metal. The specific heat of water is 4.184 J/g/K. Express your answer to three significant figures in scientific notation.
Calculate the final temperature of the system: A 50.0 gram sample of water initially at 100...
Calculate the final temperature of the system: A 50.0 gram sample of water initially at 100 °C and a 100 gram sample initially at 20.72 °C are mixed. The specific heat of water is 4.184 J/gC). Record your answer in scientific notation using 3 significant figures.
A 25.00 gram sample of an unknown metal initially at 99.0 degrees Celcius is added to...
A 25.00 gram sample of an unknown metal initially at 99.0 degrees Celcius is added to 50.00 grams of water initially at 9.47 degrees Celcius. The final temperature of the system is 20.15 degrees Celcius. Calculate the specific heat of the metal. (The specific heat of water is 4.184 J/g*C). Record your answer in scientific notation using three significant figures.
A solution was prepared by dissolving 42.0 g of KCl in 225 g of water. Calculate...
A solution was prepared by dissolving 42.0 g of KCl in 225 g of water. Calculate the mole fraction of the ionic species KCl in the solution. Express your answer to three significant figures, do not include units, and do not use scientific notation.
solve The heat energy associated with a change in temperature that does not involve a change...
solve
The heat energy associated with a change in temperature that does not involve a change in phase is given by -msAT where q is heat in joules, mis mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g·°C). and AT is the temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by where q is heat in joules, m is mass in grams, and ? H...
Strychnine is a poisonous alkaloid with a molecular formula of C21H22N2O2. What is the molar mass of strychnine (g/mol)? Give your answer to 4 significant figures. (Use C = 12.01 g/mol, H = 1.01 g/mol, N = 14.00 g/mol and O = 16.00 g/mol). Do not use scie
Strychnine is a poisonous alkaloid with a molecular formula of C21H22N2O2. What is the molar mass of strychnine (g/mol)? Give your answer to 4 significant figures. (Use C = 12.01 g/mol, H = 1.01 g/mol, N = 14.00 g/mol and O = 16.00 g/mol). Do not use scientific notation, do not include units in your answer, just write the number).
answers should have correct significant figures. All four questions use the equation q = MCAT 1....
answers should have correct significant figures.
All four questions use the equation q = MCAT 1. How much energy is absorbed by a 70.0g sample of water being heated from 18 degrees Celsius to 100 degrees Celsius, given the heat capacity of water as 4.184J per gram degrees Celsius. 2. If a 20.0g sample of gold absorbed 250.0 Joules of energy, what was the change in temperature given a heat capacity for gold as 0.129J per g degrees Celsius? 3....
Initial Final Mass of Marshmallow (g) 7.1g 6.3g Temperature (oC) 29.1 oC 32.2 oC 1. Calculate...
Initial Final Mass of Marshmallow (g) 7.1g 6.3g Temperature (oC) 29.1 oC 32.2 oC 1. Calculate the number of Joules released per gram of marshmallow burned. Show all work. Do this as follows: Find the T of water = Tfinal- Tinitial T of water = 3.1oC b. Find the Joules absorbed by the water using the formula below. Show all work. Joules = (10mL water) x (1.00g)/ mL x (3.1oC) x (4.184 joules)/goC The density of water is 1.00 g/mL, and...
rar Calculate the mass of water produced when 5.67 g of butane reacts with excess oxygen...
rar Calculate the mass of water produced when 5.67 g of butane reacts with excess oxygen Express your answer to three significant figures and include the appropriate units. reacts with oxygen. 02. to form carbon dioxide, CO, as shown in nical equation O2(g) 10H2O(g) +8C02(g) this equation represent mole the coefficient for water (10) is utane 21 Thus, the number of duced is five times the number of at react View Available Hints) HÀ Ở Ở 3 ? coefficient for...
QUESTION 19 What is the mass percent of sodium, Na, in Na2O7 Report your answer to...
QUESTION 19 What is the mass percent of sodium, Na, in Na2O7 Report your answer to two significant figures and do not include units (the units would be %) Be sure to show your work on paper and submit it at the end of the exam so partial credit can be determined. NOTE: If you need to enter an answer in scientific notation, 6.02x1023 would be entered as 6.02E23 QUESTION 20 What is the mass in grams of a single...
solve
The heat energy associated with a change in temperature that does not involve a change in phase is given by -msAT where q is heat in joules, mis mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g·°C). and AT is the temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by where q is heat in joules, m is mass in grams, and ? H...
answers should have correct significant figures.
All four questions use the equation q = MCAT 1. How much energy is absorbed by a 70.0g sample of water being heated from 18 degrees Celsius to 100 degrees Celsius, given the heat capacity of water as 4.184J per gram degrees Celsius. 2. If a 20.0g sample of gold absorbed 250.0 Joules of energy, what was the change in temperature given a heat capacity for gold as 0.129J per g degrees Celsius? 3....
rar Calculate the mass of water produced when 5.67 g of butane reacts with excess oxygen Express your answer to three significant figures and include the appropriate units. reacts with oxygen. 02. to form carbon dioxide, CO, as shown in nical equation O2(g) 10H2O(g) +8C02(g) this equation represent mole the coefficient for water (10) is utane 21 Thus, the number of duced is five times the number of at react View Available Hints) HÀ Ở Ở 3 ? coefficient for...
QUESTION 19 What is the mass percent of sodium, Na, in Na2O7 Report your answer to two significant figures and do not include units (the units would be %) Be sure to show your work on paper and submit it at the end of the exam so partial credit can be determined. NOTE: If you need to enter an answer in scientific notation, 6.02x1023 would be entered as 6.02E23 QUESTION 20 What is the mass in grams of a single...
Most questions answered within 3 hours.
-
should software developers who work on critical applications whose
failure could result in loss of human...
asked 51 seconds ago -
6. You have a parallel-plate capacitor made of two circular
metal plates. The radius of each...
asked 19 minutes ago -
A 1 230.0 kg car traveling initially with a speed of 25.000 m/s
in an easterly...
asked 1 hour ago -
1-how inefficient management affects patient care in a hospital?
2-Thinking as a COO how would you...
asked 1 hour ago -
for project management course
An indicator of project success within an organization is the
strength of...
asked 2 hours ago -
#22 Suppose cars pass an intersection at a rate of 120 per hour.
What is the...
asked 2 hours ago -
How did immigration affect the culture of the United States?
Explain in detail and give specific...
asked 2 hours ago -
A dolphin in an aquatic show jumps straight up out of the water
at a velocity...
asked 4 hours ago -
x
P(x)
0
0.25
1
0.2
2
0.15
3
0.4
Find the standard deviation of this...
asked 4 hours ago -
An economist claims that he has found evidence to support the
assumption that the investment expenditure...
asked 5 hours ago -
Question 10 (1 point)
Suppose that a researcher studying the weight of female college
athletes wants...
asked 6 hours ago -
a. Using your
molecular modeling kit, build a model of sucrose. Locate the oxygen
bridge in...
asked 6 hours ago