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CBSE Class 12-science Answered

the half life span of a radioactive element is 10 years .in no. will 10 gram of that substances remain 1•25 gram
Asked by mishraridhi2020 | 23 Jun, 2022, 09:16: AM
answered-by-expert Expert Answer
Half life is calculated by- 
straight T subscript 1 divided by 2 end subscript space equals 10 space hours straight T subscript mean equals space 1.44 space straight T subscript 1 divided by 2 end subscript straight T subscript mean space space end subscript equals space 1.44 space straight T subscript 1 divided by 2 end subscript straight T subscript mean equals space 1.44 cross times 10 equals 14.4 space hr
Answered by Ravi | 27 Jun, 2022, 06:49: PM

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CBSE 12-science - Chemistry
the half life span of a radioactive element is 10 years .in no. will 10 gram of that substances remain 1•25 gram
Asked by mishraridhi2020 | 23 Jun, 2022, 09:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
what is the formula for effect of temperature on rate of reaction?
Asked by imtiyazmulla68 | 22 Mar, 2018, 08:25: PM
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CBSE 12-science - Chemistry
Define activation energy.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Chemistry
What is the effect of a catalyst on the equilibrium constant of a reaction?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Chemistry
What is temperature coefficient? Explain
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Chemistry
Define transition state or activation complex.
Asked by Topperlearning User | 22 Jun, 2016, 10:39: AM
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CBSE 12-science - Chemistry
The activation energy for a reaction is zero. Calculate the value of its rate constant at 300 K, if k = 1.6 x 106 s-1 at 280 K? (R = 8.31 JK-1 Mol-1)
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Chemistry
Draw a graph to show the various energy changes that take place in the following reaction: H2 (g) + I2 (g)     2HI (g)
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Chemistry
Explain why the activation energy of a reaction can never be zero.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Chemistry
The rate constant for the first order decomposition of certain reaction is described by the equation log k (sec-1) = Calculate the activation energy for this reaction.
Asked by Topperlearning User | 22 Jun, 2016, 09:56: AM
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