Zinc sulfide reacts with oxygen according to the reaction: 2ZnS(s)+30₂(g) →2ZnO(s)+2SO₂ (g) A reaction mixture initially contains 3.6 mol ZnS and 8.7 mol O2. ▼ Part A Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains? Express your answer using two significant figures. | ΑΣΦ n = Submit Request Answer www. ? mol
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![### Zinc Sulfide and Oxygen Reaction
#### Chemical Equation
Zinc sulfide reacts with oxygen according to the following balanced chemical equation:
\[ \text{2ZnS (s) + 3O}_2 \text{ (g) } \rightarrow \text{2ZnO (s) + 2SO}_2 \text{ (g)} \]
#### Initial Conditions
A reaction mixture initially contains:
- 3.6 mol of Zinc Sulfide (\( \text{ZnS} \))
- 8.7 mol of Oxygen (\( \text{O}_2 \))
#### Part A: Determining the Excess Reactant
**Question:**
Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains?
**Instructions:**
Express your answer using two significant figures.
**Input Section:**
\[ n = \_\_\_\_ \, \text{mol} \]
**Actions Available:**
- Submit your answer
- Request Answer
This problem helps in understanding the concept of limiting reactants in a chemical reaction and calculating the leftover amount of an excess reactant.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4d09ffa2-b6c2-4e97-915d-74d176d987ab%2F50bc688b-93f5-45d6-8198-ea91f81d3675%2F8g5njxk_processed.jpeg&w=3840&q=75)
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