Which result occurs during an exothermic reaction?
A.Light is released into the environment, while heat is absorbed.
B.Light and heat are absorbed from the environment.
C.Heat is released into the environment, while light is absorbed.
D.Light and heat are released into the environment.
Which event is an example of an endothermic reaction?
A.photosynthesis
B.condensation
C.rusting of iron
D.burning wood
How is total reaction energy calculated?
A.reactant bond energy – product bond energy
B.product bond energy ÷ reactant bond energy
C.product bond energy × reactant bond energy
D.product bond energy × reactant bond energy
When producing hydrogen iodide, the energy of the reactants is 581 kJ/mol, and the energy of the products is 590 kJ/mol. The equation is shown.
H2 + I2 → 2HI
What is the total energy of the reaction? Is this an endothermic or exothermic reaction?
A.When producing hydrogen iodide, the energy of the reactants is 581 kJ/mol, and the energy of the products is 590 kJ/mol. The equation is shown.
H2 + I2 → 2HI
A.–9 kJ/mol, endothermic
B.9 kJ/mol, endothermic
C.9 kJ/mol, exothermic
D.9 kJ/mol, exothermic
Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown.
2HBr → H2 + Br2
The energy of the reactant is 732 kJ/mol, and the energy of the products is 630 kJ/mol.
What is the total energy of the reaction? Is this reaction endothermic or exothermic?
A.102 kJ/mol, exothermic
B.102 kJ/mol, endothermic
C.–102 kJ/mol, endothermic
D.–102 kJ/mol, exothermic
Willow's wrong...
1.) C Light and heat are released into the environment.
2.) A photosynthesis
3.) B reactant bond energy – product bond energy
4.) C –9 kJ/mol, exothermic
5.) C 102 kJ/mol, endothermic
Your welcome,
-GI Joe
Total Bond Q.C.
100% correct
1: B (Light or heat are released into the environment.)
2: B (photosynthesis)
3. B (reactant bond energy – product bond energy)
4. D (–9 kJ/mol, exothermic)
5. C 102 kJ/mol, endothermic
GI joe is right
GI Joe thank you
do people know that the answers change around for everyone lol
yeahh i found that out the hard way...
If u don't have question 3, and have a different question 5 instead, then the answer is:
467 kJ/mol; lose heat
Can confirm 100%
Thx!!!
(2022 Answers)
1- "Light or heat are released into the environment."
2- "photosynthesis"
3- "–9 kJ/mol, exothermic"
4- "102 kJ/mol, endothermic"
5- "467 kJ/mol; lose heat"
(No letters because that just makes it confusing + The letters change around.)
thx GI Joe is right im sooooooooooooo happppppyyyyyyy
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