Two solutions, initially at 23.49 °C, are mixed in a perfect coffee cup calorimeter at the same temperature. When 100.0 mL of 0.395 M sodium chloride is mixed with 200.0 mL of 0.5 M X(NO3)2, the temperature increases to 27.86 °C. What is the AH°rxn for the reaction written below? (Assume the density (1.00 g/mL) and specific heat of the solutions are the same as water: 4.184 J/g°C.) Only enter your numerical answer. Do not enter units. X(NO3)2(aq) + 2NaCl(aq) →XCl2(s) + 2NaNO3(aq) AH°rxn = ? kJ

Two solutions, initially at 23.49 °C, are mixed in a perfect coffee cup calorimeter at the same temperature. When 100.0 mL of 0.395 M sodium chloride is mixed with 200.0 mL of 0.5 M X(NO3)2, the temperature increases to 27.86 °C. What is the AH°rxn for the reaction written below? (Assume the density (1.00 g/mL) and specific heat of the solutions are the same as water: 4.184 J/g°C.) Only enter your numerical answer. Do not enter units. X(NO3)2(aq) + 2NaCl(aq) →XCl2(s) + 2NaNO3(aq) AH°rxn = ? kJ

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

INSTRUCTIONS 1. Please enumerate all given values. 2. Identify all unknown values 3. Write the formula first before substituting the values. 4. Enclose final answers in boxes. 5. Do not round off immediately. Consider the whole value during computations. 6. Round off final answers to 2 DECIMAL PLACES ONLY. Problem: A 0.5 L sample contains 10.0 g of hemoglobin with an osmotic pressure of 5.9 torr at 22ºC. What is the molar mass of hemoglobin if 760 torr is the same with 1 atmosphere?
Quality control material in the hematology laboratory is best described as: Question 3 options: A) a stable material used to establish the accuracy of an automated method and normal curve B) a stable material used to monitor the functioning of an analyzer or the performance of a process C) reagents used to perform preventative maintenance D) materials tested to develop a normal reference range
Plz help
INSTRUCTIONS 1. Please enumerate all given values. 2. Identify all unknown values 3. Write the formula first before substituting the values. 4. Enclose final answers in boxes. 5. Do not round off immediately. Consider the whole value during computations. 6. Round off final answers to 2 DECIMAL PLACES ONLY. Problem: What volume (mL) sulfuric acid solution (98.0% of the concentrated sulfuric acid by weight; density 1.84 g/mL) and the volume of water are used in the preparation of 2.00 L of a 4.00 N solution?
The solvent front distance is from ... Group of answer choices the bottom of the paper to the top of where the solvent reached. the baseline to the top of where the solvent reached. from the top of the spot to the top of the paper. the bottom of the paper to the top of the paper. from the top of the spot to the top of where the solvent reached.
Cypress oil should be used _______ and should be stored in a _______ place. Choose one answer. a. diluted, warm b. diluted, cool c. undiluted, dark d. undiluted, light
Draw the sktech graph i want to know if i did it right
kindly help me how to get or how they solve the Average Height kindly show some solution on how did they get the answer
Consider a compound that exhibits negative solvatochromism. If the compound is green when dissolved in a very non-polar solvent, what color might the solution change to if the solvent was made more polar? (Choose the BEST answer.) Group of answer choices violet (purple) red any color other than green blue
I only need help with questions three, please solve but always explain. I am not sure what the question is asking, and no other techniques come to mind when thinking about how to dry crystals more.
GENERAL INSTRUCTION: 1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to…
Iodoform test of Acetone