Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

Pl give an easy solution..pl experts
question image
Asked by jain.pradeep | 04 Feb, 2020, 06:41: PM
answered-by-expert Expert Answer
We have given,
 
straight U presubscript 92 presuperscript 238 rightwards arrow with blank on top Pb presubscript 92 presuperscript 206
An ore of U236 found to contain U236 and Pb206 in the weight ratio of 1:0.1.
Half life period of U236 = 4.5×109 years
 
straight N subscript 0 equals 1 over 238 plus fraction numerator 0.1 over denominator 206 end fraction space equals space 46.85 cross times 10 to the power of negative 4 end exponent mole straight N equals 1 over 238 equals 42.0 cross times 10 to the power of negative 4 end exponent mole straight lambda space equals fraction numerator 0.693 over denominator 4.5 cross times 10 to the power of 9 end fraction equals 1.54 cross times 10 to the power of negative 9 end exponent space years to the power of negative 1 end exponent As space we space know comma straight t equals fraction numerator 2.303 over denominator 1.54 cross times 10 to the power of negative 10 end exponent end fraction log fraction numerator 46.85 cross times 10 to the power of negative 4 end exponent over denominator 42.0 cross times 10 to the power of negative 4 end exponent end fraction straight t equals 7.097 cross times 10 to the power of 8 space year

Answered by Ramandeep | 05 Feb, 2020, 12:38: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Chemistry
Q. 59 Review Later If the bond order in Cl O 4 ^ - is x, find the value of 100x.
question image
Asked by cheekatiyogendra143 | 20 Apr, 2024, 11:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
the frequency associated with a photon of radiation having a wavelength of 6000 A is
Asked by jwhhebbb | 19 Apr, 2024, 01:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
distance of closest approach in chemistry
Asked by adityadoodi3 | 05 Apr, 2024, 11:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
the ratio of velocity of the electron in the third and fifth orbit of li2+ would be
Asked by pratap62437 | 19 Feb, 2024, 12:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
the total no of aromatic compounds
question image
Asked by malayakdha | 07 Feb, 2024, 12:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
please help me in solving this
question image
Asked by sayushman087 | 01 Feb, 2024, 10:28: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
if bi with atomic mass number 83 number 211 and undergoes bf deay, the resultant daughter nucleus will be a) bi - 209 c) tx - 207 b) p_{0} - 211 d) pa-208
Asked by marthalamanoharreddy65 | 17 Dec, 2023, 10:26: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
मानाकि इलेक्ट्रॉन व प्रोटाॅन के मध्य दूरी r पर स्थितिज ऊर्जा को -ke^2÷3r^3 द्वारा दिया जाता है। इस काल्पनिक परमाणु की ऊर्जा solve करने के लिए बोहर principal का use करो।
Asked by aftab01561 | 02 Jul, 2022, 11:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
atomic number of carbon
Asked by katakamsettygayathri | 11 Jun, 2022, 09:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
why does 3p orbitals have empty d orbitals whereas 2p orbitals don't have empty d orbitals
Asked by vkanirudh2 | 30 May, 2022, 09:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×