Welcome to Westonci.ca, your ultimate destination for finding answers to a wide range of questions from experts. Get immediate and reliable solutions to your questions from a knowledgeable community of professionals on our platform. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.
Sagot :
The amount of nitrogen-13 sample that remained after 40 minutes has been 8 mg.
Half-life can be defined as the time required by the substance to reduce half of its initial concentration.
The half-life of Nitrogen-13 has been 10 minutes. In 10 minutes, the sample will be reduced to
of its concentration,
The total time has been 40 minutes.
The number of half-life experienced by the sample has:
Number of half-life = {Total-time}/{Half-life}
Number of half life cycles = {40}/{10}
The number of half-life cycles = 4
The sample has been reduced to 50% in the first half-life cycle,reduced to 25% in the 2nd half-life cycle, then 12.5% in 3rd half cycle and finally 6.25% by the end of 4th half cycle.
The sample remained = 6.25% of the initial concentration.
The sample remained = (6.25/100)
×128mg
The sample remained = 8 mg
Thus from above we concluded that the amount of nitrogen-13 sample that remained after 40 minutes has been 8 mg.
learn more about half life: https://brainly.com/question/16387602
#SPJ4
Thanks for using our platform. We aim to provide accurate and up-to-date answers to all your queries. Come back soon. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. We're glad you visited Westonci.ca. Return anytime for updated answers from our knowledgeable team.
