<h3>
Answer:</h3>
292.10 mL
<h3>
Explanation:</h3>
From the question we are given;
- Initial volume, V1 of Ne gas is 500 mL
- Initial pressure, P1 of Ne gas is 0.868 atm
- Initial temperature, T1 of Ne gas is 55°C
- but, K = °C + 273.15, thus, T1 = 328.15 K
- Final pressure of the gas, P2 = 1.35 atm
- Final temperature of the gas, T2 = 25°C
= 298.15 K
We are required to calculate the new volume, V2 of the gas;
Using the combined gas equation;
Rearranging the formula we can calculate the new volume, V2;
Therefore, the new volume is 292.10 mL
Above is a potential energy curve of a reaction. It depicts conversion of reactant to product via transition state.
When a catalyst is added to the reaction system, energy barrier of reaction decreases.
It must be noted that energy barrier reaction is defined as energy difference between reactant and transition state.
In present case, energy of reactant is 200 kj, while that of transition state (in absence of catalyst) is 650 kj
Thus, energy barrier of reaction is 650 - 200 = 450 kj
<span>Hence, system must absorb 450 kj of energy for the reaction to start, if no catalyst was used</span>
Answer:
Coefficients
Explanation:
Chemical equations are first written as a skeleton equation, which includes how many atoms each element and compound has. Skeleton equations are not 'balanced' because the number of atoms of each element on the left side (reactants) is not equal to the right side (products).
To balance a chemical equation, you can write coefficients in front of single elements and compounds. The coefficient multiplies with each single element and with each element in the compound.
For example, in this skeleton equation:
H₂ + Cl₂ => HCl
Reactants: Products:
2 hydrogen 1 hydrogen
2 chlorine 1 chlorine
Write the coefficient 2 in the products.
H₂ + Cl₂ => 2HCl
Now both reactant and product sides have 2 chlorine and 2 hydrogen, so the equation is balanced.
