Physics, asked by Charisma7301, 1 year ago

the half life of radium is 1622years .how long will it take for 7th/8 of a given amount of decay?

Answers

Answered by Rohitgahlawat

mole of Pb=1210no of nuclei N=6.023*1023210 A=λN77.4*3.7*1010=λ×6.023*1023210 9985.024*10−13=λ decay constant .half life =0.693λ=0.6939985.024*10−13 secin years=0.6939985.024*10−13*365*24*60*60≈22 yearsregards

Previous Question

Next Question

Similar questions

Math, 6 months ago

what is the degree of 46 in maths...

Physics, 6 months ago

if angle of reflection is 37 degree on a plane mirror, the angle of incidence will be -...

Math, 6 months ago

find the principal that will amount to Rupees 2240 at 4% per annum simple interest in 3 years Answer Let the principal be x Time = 3 years Rate of interest = 4% Amount = Rs.2240 Simple interest = Amount - Principal = 2240-x Formula :SI = PxRxT 100 100(2240-x)=12x100(2240−x)=12x 224000-100x=12x224000−100x=12x 224000=112x224000=112x \frac{224000}{112}=x 112 224000...

English, 1 year ago

what is correct, is't pleas bear with me or pleas peer with me...

Science, 1 year ago

The sun is a. an unusually hot star. c. a typical star. b. a very cool star. d. None of the above.

English, 1 year ago

What was the old man worry about? why?

Math, 1 year ago

Find the zeros of the quadratic polynomial 8x^2-21-22x and verify the relationship between zeros and coefficients of the polynomial.

Physics, 1 year ago

a body moving with uniform acceleration travels 84m in First 6s and 180m in next 5s . Find the initial velocity and acceleration of body...