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Q: If you had a 5 gram sample of lawrencium how much would remain in 30 minutes?
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How much would still remain in 30 minutes if you had a 5 - grm sample of lawrencium?

Lawrencium has a half-life of about 215 minutes. After 30 minutes, about 85% of the original sample would remain. Therefore, approximately 4.25 grams of lawrencium would still be present in a 5-gram sample after 30 minutes.


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 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 would lawrencium cost?

Lawrencium is not a commercial product.


How much cesium would remain from a 10 g sample after 2 years?

5g would remain


Will lawrencium combine with other elements?

We would expect Lawrencium to react with other elements similar to the way scandium or yttrium do, these being in the same column of the periodic table. However, lawrencium is highly radioactive, and most of the isotopes have half-lives in the seconds; the longest lived isotope has a half-life of 40 minutes, so that doesn't give chemists much time to work with it.


How much Cu-64 would remain from a 2 mg sample after 12 hours?

1mg


How much Cu-61 would remain from a 2 mg sample after 6 hours?

0.5 mg


How much Cu-61 would remain from a 2 mg sample after 9 hrs?

.25 mg


How much of a g sample of barium-131 would remain after 36 days?

The mass is 1,075 g.


How much Cu-64 half-life about 12 hours would remain from a 2 mg sample after 12 hours?

1 mg