Question

A sample contains 30P (half-life 2.5 mins) and 13N (half-life 10 mins). Initially there is an...

A sample contains 30P (half-life 2.5 mins) and 13N (half-life 10 mins). Initially there is an equal number of these two isotopes. After 20 minutes the ratio of the number of nitrogen atoms remaining to the number of phosphorus atoms remaining is

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A sample of radioactive nuclei initially contains 6.00 ×1010×1010 radon atoms. The half-life of this type...
A sample of radioactive nuclei initially contains 6.00 ×1010×1010 radon atoms. The half-life of this type of nucleus is 500 days. How many nuclei have decayed after 167 days? A sample of radioactive nuclei initially contains 6.00  radon atoms. The half-life of this type of nucleus is 500 days. How many nuclei have decayed after 167 days? 2.00×1010 4.00×1010 1.24×1010 4.76×1010
A sample of radioactive nuclei initially contains 9.00 ×1010 radon atoms. The half-life of this type...
A sample of radioactive nuclei initially contains 9.00 ×1010 radon atoms. The half-life of this type of nucleus is 450 days. How many nuclei have decayed after 150 days? OPTIONS: 7.14×1010 6.00×1010 3.00×1010 1.86×1010
A sample contains 2x10^20 atoms of an isotope that decays with a half-life of 2.2 years....
A sample contains 2x10^20 atoms of an isotope that decays with a half-life of 2.2 years. How many undecayed atoms are left after 7.9 years? A. 5.6x1019 Atoms B. 1.7x1019 Atoms C. 1.8x1020 Atoms D. 1.3x1018 Atoms
the half-life of a radio element is 4 minutes. if the sample contains 3×10^16 nuclei ,find...
the half-life of a radio element is 4 minutes. if the sample contains 3×10^16 nuclei ,find an appropriate value of the decay constant .
One isotope of holmium, 162Ho, has a half-life of 22 minutes. The half-life of a second...
One isotope of holmium, 162Ho, has a half-life of 22 minutes. The half-life of a second isotope, 164Ho, is 37 minutes. Starting with a sample containing equal amounts, find the ratio of the amounts of 162Ho to 164Ho after one hour.
a pure sample of a radioactive substance has 16*10^12 atoms and the half life is 3...
a pure sample of a radioactive substance has 16*10^12 atoms and the half life is 3 minutes. How long does it take until 5*10^11 atoms of the substance have not yet decayed?
A radioactive sample contains 2.94 μg of pure11C, which has a half-life of 20.4 min. a)...
A radioactive sample contains 2.94 μg of pure11C, which has a half-life of 20.4 min. a) How many moles of 11C is present ini- tially? The value of Avogadro’s number is 6.02 × 1023 nuclei/mol. Answer in units of mol. b) Find the number of nuclei present initially. Answer in units of nuclei. c)Find the initial activity of the sample. Answer in units of Bq. d)Find the activity of the sample after 6.97 h. Answer in units of Bq.
Initially a sample of radioactive nuclei of type A contains 4 times as many nuclei as...
Initially a sample of radioactive nuclei of type A contains 4 times as many nuclei as a sample B. 2 days later the samples both have the same number of nuclei. Which sample has the longer half life? Determine the half life of B if the half life of A is 0.5 days.
A 305-g sample of pure carbon contains 1.3 parts in 1012 (atoms) of 146C. The half-life...
A 305-g sample of pure carbon contains 1.3 parts in 1012 (atoms) of 146C. The half-life of 146C is 5730 yr.How many disintegrations occur per second?
15.58 The half-life for the radioactive decay of C−14 is 5730 years. How long will it...
15.58 The half-life for the radioactive decay of C−14 is 5730 years. How long will it take for 25% of the C−14 atoms in a sample of C−14 to decay? If a sample of C−14 initially contains 1.9 mmol of C−14, how many millimoles will be left after 2250 years?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT