### Understanding Molecular Velocity**At 20°C (approximately room temperature), the average velocity of N₂ molecules in air is 1050 mph.****Part A**- **Question:** What is the average speed in m/s?- **Instruction:** Express the velocity in meters per second to four significant figures.**Input Box:**- Enter the value for velocity (v) in the provided field.- The unit for velocity is meters per second (m/s).**Submission:**- Click "Submit" after entering your answer.- If needed, you can request the answer for assistance.**Note:** There are no graphs or diagrams to explain for this transcription. **Part A: Information**At 20°C (approximately room temperature), the average velocity of \( \text{N}_2 \) molecules in air is 1050 mph.---**Part B: Question**What is the kinetic energy (in \( J \)) of an \( \text{N}_2 \) molecule moving at this speed?*Express your answer in joules to four significant figures.*- Input box labeled: \( K = \) _______ J[Submit Button] [Request Answer Button]---**Part C: Question**What is the total kinetic energy of 1 mol of \( \text{N}_2 \) molecules moving at this speed?*Express your answer in joules per mole to four significant figures.*- Input box labeled: \( K = \) _______ J/mol[Icons for operations and functions available]---*Note:* The images include input fields for numerical answers and functionality buttons possibly for inserting mathematical operations or symbols.

Answered: Image /qna-images/answer/60eaf8f7-17a7-4414-9ebe-7702b7e19b68.jpg

At 20°C (approximately room temperature) the average velocity of N₂ molecules in air is 1050 mph Part C Y K Part B 1957 ΑΣΦ What is the kinetic energy (in J) of an N₂ molecule moving at this speed? Express your answer in joules to four significant figures. K= Submit ΤΗΣ ΑΣΦ Request Answer Express your answer in joules per mole to four significant figures. What is the total kinetic energy of 1 mol of N₂ molecules moving at this speed? 154894 ? ? J J/mol

At 20°C (approximately room temperature) the average velocity of N₂ molecules in air is 1050 mph Part C Y K Part B 1957 ΑΣΦ What is the kinetic energy (in J) of an N₂ molecule moving at this speed? Express your answer in joules to four significant figures. K= Submit ΤΗΣ ΑΣΦ Request Answer Express your answer in joules per mole to four significant figures. What is the total kinetic energy of 1 mol of N₂ molecules moving at this speed? 154894 ? ? J J/mol

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...

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Determine the amount of heat (in kJ) given off when 1.28 × 104 g of NO2 is produced according to the following equation: 2 NO(g) + O2(g) →2NO2(g). ΔH = −114.6 kJ/mol Enter your answer in scientific notation.
When 2 moles of H2S(g) react with O2(g) to form H2O(l) and SO2(g) according to the following equation, 1.12×103 kJ of energy are evolved. 2H2S(g) + 3O2(g)---->2H2O(l) + 2SO2(g) Is this reaction endothermic or exothermic? _________(endothermic or exothermic)What is the value of q? ________kJ
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WRITE THE COMPLETE VALUE AND DO NOT ROUND OFF THE FINAL ANSWER. INCLUDE THE SIGN (+ OR -) BUT DO NOT INCLUDE THE UNIT. 3H2 (g) + CO (g) → CH4 (g) + H2O (g) Use Hess's Law to determine the enthalpy change for this methanation reaction using the following chemical equations and the value for their enthalpy changes. 2H2(g) + O2(g) → 2H20(g) 2C(s) + O2(9) CH4(g) + 202(g) CO2(g) + 2H2O(g) AH = -802.7 kJ C(s) + O2(g) → CO2(g) AH = -483.6 kJ → 2C0(g) AH = -221.0 kJ AH = -393.5 kJ
Determine the amount of heat (in kJ) given off when 2.48×104g of NO2 is produced according to the following equation: 2 NO(g) + O2(g)→2NO2(g) ΔH = −114.6 kJ/mol
What is the specific heat of lead if it takes 98.0 J to raise the temperature of a 75.4 g block by 10.5 ° C? Express your answer with the appropriate units.
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State whether these statements refer to either exothermic or endothermic processes: Combustion of cooking gas Photosynthesis Respiration Melting of ice Temperature rises as the process occurs Reactants have more enthalpy than products Freezing of water Heat energy is taken in Decrease in the surrounding temperature Heat energy is given out
Carbohydrate Requirements (sugars and starch in rice, potato, pasta, bread, sugar, fruits, etc.) : The Institute of Medicine recommends adults consume on average 50 percent of their daily calories from carbohydrates. Since carbohydrates contain about 3.94 calories in each gram and recommended daily calories intake for an average person is 2,100 cal, calculate how many grams of carbohydrate average person need to eat per day? (Hint: first find how many calories should be coming from the carbs, then convert them to grams, last round answer to two significant figure)
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