Is Na+H20 -> H2+ NaOH a single replacement, Double Replacement or A Decomposition reaction
1 answer:
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Answer:
the work done on the gas is 4,988.7 J.
Explanation:
Given;
number of moles of the monoatomic gas, n = 4 moles
initial temperature of the gas, T₁ = 300 K
final temperature of the gas, T₂ = 400 K
The work done on the gas is calculated as;
For monoatomic ideal gas:
Where;
R is ideal gas constant = 8.3145 J/K.mol
Therefore, the work done on the gas is 4,988.7 J.
Answer : The initial concentration of A is, 0.347 mol/L
Explanation :
Expression for rate law for first order kinetics is given by:
where,
k = rate constant =
t = time passed by the sample = 5 s
a = initial amount of the reactant = ?
a - x = amount left after decay process = 0.081 mol/L
Now put all the given values in above equation, we get
Therefore, the initial concentration of A is, 0.347 mol/L