Question

The red color in some fireworks is due to the pres

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Sr + 3/2O2 +C(graphite)\rightarrowSrCO3  

1 mole of stontium carbonate formation gives = 1.22*103Kj/mole

147.6 gm of SrCO3 formation released = 1.22*103ki/mole

1.95g of SrCO3 formation released = 1.22*103*1.95/147.6 = 16.11KJ/mole

Add a comment
Know the answer?
Add Answer to:
The red color in some fireworks is due to the presence of strontium metal. In the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 1) Calculate AH (250°C) for the formation of ammonia gas from nitrogen gas and hydrogen gas...

    1) Calculate AH (250°C) for the formation of ammonia gas from nitrogen gas and hydrogen gas Substance Enthalpy value (kJ/mole) Entropy value K-mole) 1925 1306 191.5 Ammonia gas Hydrogen gas Nitrogen gas (write rxn with phase labels) 1) Calculate the standard Enthalpy change at 25.0°C Gaseous water (-241.8 kJ/mole) plus Carbon graphitel( 0.0 kJ/mole) yields hydrogen gas (0.0kJ/mole) plus carbon dioxide gas(-393.5 kJ/mole) Calcium carbonate (marble chips) reacts with hydrochloric acid to produce carbon dioxide gas, water and calcium chloride....

  • The enthalpy change for a chemical reaction is the sum of the energy consumed in breaking...

    The enthalpy change for a chemical reaction is the sum of the energy consumed in breaking bonds and the energy released during bond formation. One way to determine the overall energy change for a chemical reaction is to apply Hess's law to add together a group of reactions which can be arranged such that the chemical equations, when combined, give the overall equation we are trying to characterize 3rd attempt See Hint Ad See Periodic Table Part 1 (1 point)...

  • Need help for answering first part(1) color change is due to presence? And what was the...

    Need help for answering first part(1) color change is due to presence? And what was the reason for the equilibrium turn to reverse direction? And also last 2 questions.! Chemistry 102 EXPERİMENT3 Equilibrium& Le Chatelier's Principle tive Qualita of this experiment is to study qualitative aspects of chemical systems in dynamic equilibrium. in doing this experiment, you will learm the operation of Le Chateliers principle. n Vslowly add 1 to 2 drops of dilute 6 M sodium hydroxide solution to...

  • 13 Question (3 points) The enthalpy change for a chemical reaction is the sum of the...

    13 Question (3 points) The enthalpy change for a chemical reaction is the sum of the energy consumed in breaking bonds and the energy released during bond formation. One way to determine the overall energy change for a chemical reaction is to apply Hess's law to add together a group of reactions which can be arranged such that the chemical equations, when combined, give the overall equation we are trying to characterize Part 1 (1 point) Il See Periodic Table...

  • 1.) The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the...

    1.) The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the final temperature if 305J of heat is added to 41.7 g of this metal, initially at 20.0 ∘C? 2.) When 1723 J of heat energy is added to 42.3 g of hexane, C6H14, the temperature increases by 18.0 ∘C. Calculate the molar heat capacity of C6H14 3.) Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are...

  • What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction?...

    What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction? anoina to aizy ona svidstils Reaction Class 1 2 iliw 15 TO15192do art sshommua bns nosgol rond dass 101 12575 gbubnium oY noi de lo enor Som 10 910 w II woy Xd on abian aningstid on naloga uzib 3 OOH 4 5 DHET 6 7 SET adus 00 9 Complex ion formation 10 11 No reaction 12 13 14 Combination 15 16 17...

  • CHM 1210 Final practice Name: Know electrolyte table, 5 solubility rules; 26 polyatomics (name/formula) Write 7...

    CHM 1210 Final practice Name: Know electrolyte table, 5 solubility rules; 26 polyatomics (name/formula) Write 7 naturally occurring diatomic molecules (name; formula, phase , charge) Write rite out strong acids and weak acids by name; formula, phase ,charge Write out the molecular, complete, and net-ionic equations for the following reactions The mixing of Cobalt(IlI) chloride and silver nitrate The mixing of acetic acid and sodium hydroxide The mixing of hydrochloric acid and cakcium hydroxide The mixing of barium chloride and...

  • POST-LABORATORY QUESTIONS (For full credit show your calculations). us T able enced color of ligh...

    the date is 4/09/19 POST-LABORATORY QUESTIONS (For full credit show your calculations). us T able enced color of light and the coresponding wavelength (om) associated with each cation Barium, Ba2 Copper, Cu2 Sodium, Na Calcium, Ca2 Potassium, K Strontium, Sr2 2. Calculate the energy associated with the light emitted by each of the K', Ca*2 and Li. Ca 2 Ba*2 s Flame Tests & Electron Configuration FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly...

  • Research Paper Criterion 1. The first draft paper should contain the following a DO NOT include...

    Research Paper Criterion 1. The first draft paper should contain the following a DO NOT include a title page with the first draf (minimum 800 words), Insert name, class, ar right corner. The header will be removed to b. in text footnotes (citations) corresponding to With numerical citations, references should b repeated, do not give it number; rathe ams. In-text Chem 111 Lab Start to Name: Sufian Allah od Calelations Due Date: 11/22 Station Reaction tenergy. heat of wald ange,...

  • Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand...

    Chapter 5 and Chapter 10 Problem solving (please practice the following questions and make sure that you understand the principles behind: you can find Ar from textbook or website I. A 145 g sample of copper metal at 100.0°C is placed into 250.0 g of water at 25.0°C in a calorimeter. When the system reaches thermal equilibrium, the temperature of the water in the calorimeter is 28.8°C. Assume the calorimeter is perfectly insulated. What is the specific heat capacity of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT