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What is the heat capacity of the unknown substance? Express your answer using two significant figures....
Apps CHEM134F19-004 HW on Ch 6 Exercise 6.70 A2.37 g sample of a substance suspected of...
Apps CHEM134F19-004 HW on Ch 6 Exercise 6.70 A2.37 g sample of a substance suspected of being pure gold is warmed to 71.8 "C and submerged into 15.6 g of water initially at 24.2 C. The final temperature of the mixture is 27.0 ° C. Part A What is the heat capacity of the unknown substance? Express your answer using two significant figures. VAED ? J/g. c Submit Request Answer Part B Could the substance be pure gold? yes no
A 2.74 g sample of a substance suspected of being pure gold is warmed to 72.1 °C and submerged into a 15.2 g of water i...
A 2.74 g sample of a substance suspected of being pure gold is warmed to 72.1 °C and submerged into a 15.2 g of water initially at 24.7 °C. The final temperature of the mixture is 26.3 °C. What is the heat capacity of the unknown substance? Could the substance be pure gold?
A 2.69 g sample of a substance suspected of being pure gold is warmed to 72.6...
A 2.69 g sample of a substance suspected of being pure gold is warmed to 72.6 ∘C and submerged into 14.4 g of water initially at 24.9 ∘C. The final temperature of the mixture is 26.8 ∘C. (Assume that the specific heat capacity of water is 4.184 Jg−1∘C−1.) What is the heat capacity of the unknown substance?
need help 18. (1 point) A 2.74 g sample of a substance suspected of being pure...
need help
18. (1 point) A 2.74 g sample of a substance suspected of being pure gold is warmed up to 72.1 °C and submerged into 15.2 g of water initially at 24.7°C. The final temperature of the mixture is 26.3°C. What is the heat capacity of the unknown substance? Could the substance be pure gold, which has a specific heat capacity of 0.128 J/g°C? 21. (1 point each) Use standard enthalpies of formation (in Appendix G in text) to...
gold Express your answer using two significant figures. Review 1 Constants l Periodic Table Suppose that...
gold Express your answer using two significant figures. Review 1 Constants l Periodic Table Suppose that 28 g of each of the following substances is initially at 27.0 °C. What is the final temperature of each substance upon absorbing 2.40 kJ of heat? Submit Part B silver Express your answer using two significant figures.
Calculating specific heat capacity A constant-pressure calorimeter is often used to find the specific heat capacity...
Calculating specific heat capacity A constant-pressure calorimeter is often used to find the specific heat capacity of a substance if it is not known. A known mass of the substance can be heated and added to water of known mass and initial temperature. Since the specific heat capacity of water is known ( C s,water =4.184J/(g⋅ ∘ C)) , the amount of heat transferred to the water can be calculated by measuring the final temperature of the mixture at thermal...
aluminum Express your answer to two significant figures. View Available Hint(s) I ALO * O a...
aluminum Express your answer to two significant figures. View Available Hint(s) I ALO * O a ? Te = Submit Part D water Express your answer to two significant figures. View Available Hint(s) 0 ADD O2 ? T: - Submit Exercise 7.49 - Enhanced - with Feedback and Hints A Revi MISSED THIS? Read Section 7.3 (Pages 267 - 272); Watch KCV 7.3, IWE 7.2. aluminum Suppose that 25 g of each of the following substances is initially at 29.0°C....
Part A What is the specific heat of liquid water? Express your answer using four significant...
Part A What is the specific heat of liquid water? Express your answer using four significant figures. 四? J/g.° C Submit My Answers Give Up Part B What is the molar heat capacity of liquid water? Express your answer using four significant figures. J/mol.° C Submit My Answers Give Up
Correct The specific heat capacity of gold is 0.128 J/(g."C), therefore, the rock cannot be pure...
Correct The specific heat capacity of gold is 0.128 J/(g."C), therefore, the rock cannot be pure gold. Even if the substance (e.g., color) to confirm that it is pure gold (as opposed to lead). According to the C, value you ca Part C A55.0 g aluminum block initially at 27.5 ° C absorbs 725 J of heat What is the final temperature of the aluminum? Express your answer in degrees Celsius to one decimal place. VAO ? C T= Request...
Consider the following data for an unknown substance X: AHvap = 21.00 kJ/mol Specific heat capacity...
Consider the following data for an unknown substance X: AHvap = 21.00 kJ/mol Specific heat capacity of liquid = 2.40 J/g. °C Boiling point = 70.0°C Molar mass=92.00 g/mol When the temperature of 1.000 mole of X(g) is lowered from 94.0°C to form X(1) at 46.0°C, 29.97 kJ of heat is released. Calculate the specific heat capacity of X(9). Specific heat capacity = J/g. °C Submit Answer Try Another Version 5 item attempts remaining
Apps CHEM134F19-004 HW on Ch 6 Exercise 6.70 A2.37 g sample of a substance suspected of being pure gold is warmed to 71.8 "C and submerged into 15.6 g of water initially at 24.2 C. The final temperature of the mixture is 27.0 ° C. Part A What is the heat capacity of the unknown substance? Express your answer using two significant figures. VAED ? J/g. c Submit Request Answer Part B Could the substance be pure gold? yes no
need help
18. (1 point) A 2.74 g sample of a substance suspected of being pure gold is warmed up to 72.1 °C and submerged into 15.2 g of water initially at 24.7°C. The final temperature of the mixture is 26.3°C. What is the heat capacity of the unknown substance? Could the substance be pure gold, which has a specific heat capacity of 0.128 J/g°C? 21. (1 point each) Use standard enthalpies of formation (in Appendix G in text) to...
gold Express your answer using two significant figures. Review 1 Constants l Periodic Table Suppose that 28 g of each of the following substances is initially at 27.0 °C. What is the final temperature of each substance upon absorbing 2.40 kJ of heat? Submit Part B silver Express your answer using two significant figures.
aluminum Express your answer to two significant figures. View Available Hint(s) I ALO * O a ? Te = Submit Part D water Express your answer to two significant figures. View Available Hint(s) 0 ADD O2 ? T: - Submit Exercise 7.49 - Enhanced - with Feedback and Hints A Revi MISSED THIS? Read Section 7.3 (Pages 267 - 272); Watch KCV 7.3, IWE 7.2. aluminum Suppose that 25 g of each of the following substances is initially at 29.0°C....
Part A What is the specific heat of liquid water? Express your answer using four significant figures. 四? J/g.° C Submit My Answers Give Up Part B What is the molar heat capacity of liquid water? Express your answer using four significant figures. J/mol.° C Submit My Answers Give Up
Correct The specific heat capacity of gold is 0.128 J/(g."C), therefore, the rock cannot be pure gold. Even if the substance (e.g., color) to confirm that it is pure gold (as opposed to lead). According to the C, value you ca Part C A55.0 g aluminum block initially at 27.5 ° C absorbs 725 J of heat What is the final temperature of the aluminum? Express your answer in degrees Celsius to one decimal place. VAO ? C T= Request...
Consider the following data for an unknown substance X: AHvap = 21.00 kJ/mol Specific heat capacity of liquid = 2.40 J/g. °C Boiling point = 70.0°C Molar mass=92.00 g/mol When the temperature of 1.000 mole of X(g) is lowered from 94.0°C to form X(1) at 46.0°C, 29.97 kJ of heat is released. Calculate the specific heat capacity of X(9). Specific heat capacity = J/g. °C Submit Answer Try Another Version 5 item attempts remaining
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