Given :
Number of molecules of .
To Find :
How many moles are in given number of molecules.
Solution :
We know, in 1 moles of any element/compound contains at atoms/molecules.
So, number of moles in molecules are :
Therefore, number of moles are 8.97 .
<span>Bond energy refers to the amount of energy required to break an atomic bond. </span><span>A large value for bond energy corresponds to a more STABLE molecule, which corresponds to a LOWER energy state.
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Answer:
d. 60.8 L
Explanation:
Step 1: Given data
- Heat absorbed (Q): 53.1 J
- External pressure (P): 0.677 atm
- Final volume (V2): 63.2 L
- Change in the internal energy (ΔU): -108.3 J
Step 2: Calculate the work (W) done by the system
We will use the following expression.
ΔU = Q + W
W = ΔU - Q
W = -108.3 J - 53.1 J = -161.4 J
Step 3: Convert W to atm.L
We will use the conversion factor 1 atm.L = 101.325 J.
-161.4 J × 1 atm.L/101.325 J = -1.593 atm.L
Step 4: Calculate the initial volume
First, we will use the following expression.
W = - P × ΔV
ΔV = - W / P
ΔV = - 1.593 atm.L / 0.677 atm = 2.35 L
The initial volume is:
V2 = V1 + ΔV
V1 = V2 - ΔV
V1 = 63.2 L - 2.35 L = 60.8 L
<u>Answer:</u>
0.800 moles of will be produced when 0.400 moles of react and are decomposed
<u>Explanation:</u>
The decomposition of (aq) ------> 2C2H5OH (aq) + 2CO2
¬moles of = 0.400 moles
Moles of produced will be calculated by the formula,
Moles of CO2 = 0.400 moles of
Substituting the values,
Moles of = = 0.400*2 = 0.800 moles
Therefore, 0.800 moles of will be produced when 0.400 moles of react and are decomposed
The correct answer is option B or number two electrons are consumers