Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

Question #338a0

1 Answer

Jul 18, 2017

#6 125g=6.125*10^(-3)kg#

Explanation:

Formula is #m_l=m_s*0.5^(t/h)#, where:
#m_l# = mass left
#m_s# = starting mass
#t# = time
#h# = half life

Unit time for #h# and #t# must be the same.

So, we have #m_l=98*0.5^(80/20)#, where #80# and #20# are the same unit of time.

#80/20=4#

#98*0.5^4=6.125g#

Related questions

See all questions in Nuclear Half-Life Calculations

Impact of this question

1487 views around the world

You can reuse this answer
Creative Commons License