radomes.openskiesproject.org
studmuffin32
studmuffin32 studmuffin32
  • 20-01-2017
  • Biology
Answered

Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?


3,240 years


6,480 years


4,860 years


1,620 years

Verified Answer :

Kurohanico
Kurohanico Kurohanico
  • 20-01-2017

4680 years

1 x .5 = .5

.5 x .5 = .25

.25 x .5 = .125

You multiplied 3 times, so 3 times 1,620 is 4,680.

Answer Link

Related Questions

1 Represent real world problems A building casts a shadow 48 feet long At the same time a 40foot tall flagpole casts a shadow 96 feet long What is the height of
Really need help with number 10 please help
Which figure of speech is the following line an example of The wind screamed and howled all night long A simile B personification C alliteration D onomatopoeia
Analyze and explain the reasons why Congress refused to approve the Treaty of Versailles or join the League of Nations
In what state did Reconstruction last the longest
What are some conflicts between humans and machines that have arisen in the past
Younger people also need to do warmups because they have more flexible muscles they have warmer muscles their muscles can also get injured none of the above
Which is bigger 18 or 8
canada has a population
Where does a euglena lives