How many kilo joules of heat are required to the decompost 1.96 mol Nah I 3(s)
1 answer:
Heat required = = 126.42 kJ
<h3>Further explanation</h3>Given
1.96 mol NaHCO₃(s)
Required
Heat needed
Solution
Reaction( decomposition of Baking soda (NaHCO₃) :
2NaHCO₃ (s) + 129 kJ ⇒ Na₂CO₃ (s) + H₂O (g) + CO₂ (g)
For 2 mol NaHCO₃ , heat needed = 129 kJ
conversion factor :
So for 1.96 mol :
= 1.96 mol x (129 kJ/2 mol)
= 126.42 kJ
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Explanation:
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% abundance of isotope Ar- 36= 0.337% =
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% abundance of isotope 2 = 0.063 % =
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% abundance of isotope 2 = 99.600 % =
Formula used for average atomic mass of an element :
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Answer: 2.58 days
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant = ?
t = age of sample = 6 days
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a) to find the rate constant
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Half life is the amount of time taken by a radioactive material to decay to half of its original value.
The half life is 2.58 days
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