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saul85 [17]
2 years ago
13

Pls help one chemistry question :/

Chemistry
1 answer:
Alex777 [14]2 years ago
3 0

The heat of reaction is 180 kJ/mol hence the reaction is endothermic.

<h3>What is bond energy?</h3>

Bond energy is the energy that is required to form a bond and must be supplied in order to break the bond. In the question, we are told that the energy of the reactants is 860 kJ/mol and the bond energy of the products is 680 kJ/mol.

Heat of reaction = Bond energy of reactants - Bond energy of products

= 860 kJ/mol - 680 kJ/mol = 180 kJ/mol hence the reaction is endothermic.

Learn ore about endothermic reaction:brainly.com/question/4345448

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3 years ago
A 4.0 L balloon has a pressure of 406 kPa. When the pressure increases to 2,030 kPa, what is the volume? *
elena-14-01-66 [18.8K]

The new volume when pressure increases to 2,030 kPa is 0.8L

BOYLE'S LAW:

The new volume of a gas can be calculated using Boyle's law equation:

P1V1 = P2V2

Where;

  1. P1 = initial pressure (kPa)
  2. P2 = final pressure (kPa)
  3. V1 = initial volume (L)
  4. V2 = final volume (L)

According to this question, a 4.0 L balloon has a pressure of 406 kPa. When the pressure increases to 2,030 kPa, the volume is calculated as:

406 × 4 = 2030 × V2

1624 = 2030V2

V2 = 1624 ÷ 2030

V2 = 0.8L

Therefore, the new volume when pressure increases to 2,030 kPa is 0.8L.

Learn more about Boyle's law calculations at: brainly.com/question/1437490?referrer=searchResults

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3 years ago
What is the formula of the compound formed between the potassium ion and the sulfide ion?
KIM [24]
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According to the following position vs. Time graph the bicyclist was
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Answer:

According to the following position vs. Time graph the bicyclist was : D

D. Not moving for the first two seconds, then begin moving at the constant speed.​

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Speed = \frac{Distance}{time}

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Along X-axis = Time taken in second

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