0
How much Cu 60 half life 24 min would remain from a 4 mg sample after 48 min?
Wiki User
∙ 12y ago
1mg. If the half life is 24 minutes then in 48 minutes the sample would decay twice. After one half life the mass would halve (to 2mg) and after the second it would have again (to 1mg).
Cordelia Stanton
Add your answer:
Earn +20 pts
How much Cu-61 half-life about 3 hours would remain from a 2 mg sample after 9 hours?
0.25
How much cu half life about 12 hours would remain from a 2 mg sample after 12 hours?
1 mg
How much Cu-64 half life about 12 hours would remain from a 2 mg sample after 12 hours?
1 mg
Molybdenum-99 has a half-life of 66 hours. After 132 hours how much of an initial sample of 10 ci of Mo-99 would remain?
2.5
How much Cu-61 half-life about 3 hours would remain from a 2mg sample after 9 hours?
1/8th of a mg. You lose half every three hours.
How many unchanges atoms would remain after 3 half lives if the initial sample had 600 unchanged atoms?
After 3 half-lives, half of the original sample would remain unchanged. After the 1st half-life: 300 unchanged atoms. After the 2nd half-life: 150 unchanged atoms. After the 3rd half-life: 75 unchanged atoms would remain.
Molybdenum-99 has half a half-life of 66 hours. after 132 hours how much of an initial sample of 10 ci of mo-99 would remain?
After 132 hours, 1/4 of the initial sample of 10 Ci of Mo-99 would remain. Since the half-life is 66 hours, after 66 hours half of the sample would remain (5 Ci), and after another 66 hours (totaling 132 hours), half of that remaining amount would be left.
How much Cu-60 (half-life 24 min) would remain from a 4 mg sample after 48 min?
1mg. If the half life is 24 minutes then in 48 minutes the sample would decay twice. After one half life the mass would halve (to 2mg) and after the second it would have again (to 1mg).
How much Cu-60 half-life 24 min would remain from a 4 mg sample after 48 min?
After 48 minutes, two half-lives have passed for Cu-60 (24 min * 2 = 48 min). Each half-life reduces the amount of Cu-60 by half, so after 48 minutes, only 1/4 of the original 4 mg sample would remain, which is 1 mg.
How Many Halflife Are These In A 100-year Span How Many Grams Of The Sample Would Remain At The End Of The 100 Years?
If the substance has a half-life of 10 years, there would be 10 half-lives in a 100-year span. Each half-life reduces the amount by half, so after 100 years, 1/2^10 = 1/1024 grams of the sample would remain.
How much would remain from a 10 g sample after 6 years?
You must know the half life of Caesium to calculate this.
How much Cu-61 half-life about 3 hours would remain from a 2 mg sample after 9 hours?
0.25
How much cu half life about 12 hours would remain from a 2 mg sample after 12 hours?
1 mg
How much of an 800-gram sample of potassium-40 will remain after 3.910000000000 years of radioactive decay?
Approximately 400 grams of the potassium-40 sample will remain after 3.91 years, as potassium-40 has a half-life of around 1.25 billion years. This means that half of the initial sample would have decayed by that time.
How much Cu-64 half-life about 12 hours would remain from a 2 mg sample after 12 hours?
1 mg
How much Cu-61 (half-life about 3 hours) would remain from a 2 mg sample after 9 hours?
.25 mg
How much Cu-64 (half-life about 12 hours) would remain from a 2 mg sample after 12 hours?
1 mg
