How many grams of oxygen gas must burn to emit -279 kJ of heat? CH4 + 202 --> CO + 2H20 AH = -802 kJ/mol OR C H4 + 2 02 right arrow CÓ + 2H2 O Delta H = -802 kJ/mol Do not type units with your answer. Type your answer to three significant figures. If this question is on an exam on your scrap paper report your answer to the proper number of significant figures but still type three significant figures online. Your Answer:

How many grams of oxygen gas must burn to emit -279 kJ of heat? CH4 + 202 --> CO + 2H20 AH = -802 kJ/mol OR C H4 + 2 02 right arrow CÓ + 2H2 O Delta H = -802 kJ/mol Do not type units with your answer. Type your answer to three significant figures. If this question is on an exam on your scrap paper report your answer to the proper number of significant figures but still type three significant figures online. Your Answer:

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

pls round to correct number of significant figures
A 150.0 g block of lead at 100.0 degree celsisus is placed in a calormeter with 50.0 g of water at 22.0 degrees celsisus. The final temperature of the system is 26.2 degree celsius. Use that inforamtion above to solve questions 1-4: Picture attached below. Need help ASAP
A calorimeter contains 583 mL of water at 22.1°C. A 336 g piece of iron is heated in a Bunsen burner flame, then quickly submerged in the water in the calorimeter. After adding the hot iron, the temperature of the water in the calorimeter rises to a
If 10.72 kJ of heat is given off when 57.04 g of unknown acid condenses from vapor to liquid, what is ΔHcond for this substance? The corresponding molecular weight is 44.99 g/mol. Round your answer to 2 decimal places.
890J of heat are applied to a piece of aluminum, causing a 4.6°C increase in its temperature. The specific heat of aluminum is 0.902 J/g°C. What is the mass of aluminum? 175g 214g 0.00220g 3,693g Prise Irert Backspace Num Lock 4 15 9. 01 131 T Y U PI 7. Home 11 Enter Shift 4 PyUp Alt Ctrl Home PoDn IT
A 5.40-g sample of octane is burned in a bomb calorimeter containing 6.17 x 102 g H,O. Given that 1.90 x 10 cal of energy is released if the water temperature increases 3.08°C. Calculate the energy released in J. Enter your answer in scientific notation. Be sure to answer all parts. × 10 (select)
A 146.3g piece of iron (specific heat = 0.449 J/g°C) is heated with a flame and dropped into a coffe cup calorimeter containing 450.0 g of water. the water (specific heat = 4.18 J/g°C) in the calorimeter increases from 20.3°C to 32.0°C. what was the initial temperature of iron?
A 125.0 g sample of metal at 85.0°C is placed in 165.0 g of water at 18.0 °C. The temperature of the water rose to 23.3°C. What is the specific heat of the metal? This question has a box to place the question-answer, but you will not get any points unless you show your work on your piece of scrap paper. Show the answer with units on the scrap paper. The specific heat of water is 4.184 J/g°C
6. If it takes 44.72 joules to heat a piece of metal weighing 16.89 g from 10.0°C to 29.0°C, what is the specific heat of the metal? op 19 0 no m f6 f7 0 f8
Can you answer this with an explaination please?
If 30.0 g H20 at 85.0°C is mixed in a coffee-cup calorimeter with 15.0 g H20 at 20.0°C, what is the final temperature (in °C) of the mixture? For this item, use 4.18 J/g.°C as the specific heat of the water. (round off final answer to 1 decimal place)
A chemist heats the block of copper as shown in the interactive, then places the metal sample in a cup of oil at 25.00 °C instead of a cup of water. The temperature of the oil increases to 26.31 °C. Calculate the mass of oil in the cup. The specific heat of copper is 0.387 J/g °C and the specific heat of oil is 1.74 J/g. °C. moil = y TOOLS