Calculate the number of grams of copper (II) sulfate produced when 5.09 grams of copper (II) sulfide is used
Solved
Show answers
More tips
- F Food and Cooking Learn How to Make Ice Cream at Home - Step by Step Guide...
- H Health and Medicine When can it be said that a person has a normal pulse?...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
Answers on questions: Chemistry
- C Chemistry The of a compound is to the of the masses of the that make up the compound. this demonstrates the law of...
- C Chemistry How many moles of sodium hydroxide would have to be added to 150 mL of a 0.483 M acetic acid solution, in order to prepare a buffer with a pH of 4.480...
- C Chemistry Calculate the average reading for all three trials for both the wet bulb and dry bulb thermometers. Convert the average temperatures for both thermometers to Celsius using this...
- C Chemistry the water-repellent property of lipids is expressed by the word...
- C Chemistry Which of the elements has the highest first ionization energy c si ge sn pb...
- C Chemistry 3. a) if a student obtains 0.890 g of lead(ii) iodide, calculate the percent yield? show calculations....
- C Chemistry Which represents the double displacement reaction between sodium chloride (nacl) and silver nitrate (agno3)? charges: na+, cl-, ag+, (no3)- nacl + ag(no3) -- cl(no3) + agna nacl...
- C Chemistry 2. How many moles of each element are found in 1 mole of C7H14O2? Write the mole ratio for each element. please can someone help me w this one...
- C Chemistry Help me please asap ..............................................
- C Chemistry HELP PLZ Consider the chemical reaction that occurs when a wooden log burns in a fireplace. Describe two changes that could be made in order to increase the rate at which the wooden...
Ответ:
2.54 mol CO2
Explanation:
To calculate the mol of carbon dioxide that will be generated by megajoule (MJ). First, we have to find the value of the formation enthalpy for the CO2 at standard conditions.
Remember that standard conditions are at 25°C and 1 atm.
Any physic chemistry book has the table of ΔHf°, I always use one name Levine's physic chemistry. You can trust its data.
Enthalpy of formation for CO2: -393.509 kJ/mol
As you can see this value means that for each 393.509 kJ liberate (that's indicated for the menus sing), 1 mol of CO2 is formed.
Let's write this using mathematic language:
393.509 kJ/ 1 mol CO2
The problem asks you to find how many mols are produced by 1 megajoule liberate, let's change megajoule to kilojoule.
1 megajoule (MJ) = 1000 kJ
1000 kJ x (1mol/ 393.509 kJ) = 2.54 mol CO2
Remember don't use the negative value to make the calculus. The negative value just indicates that the heat is been released.
If you want to watch the mathematics details, go to the image attached.