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If you have 16 g of a substance that has a half-life of 3 days after 12 days you will have how much of the substance remaining?
Wiki User
∙ 12y ago
12 days represents four half-lives in this case. Therefore you would have a half of a half of a half of a half of 16 g, or 1/16 * 16 g, or 1 g.
You'd also have 15 g of something else. The object doesn't actually disappear, it just changes into a different substance.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoIf the half-life is 3 days, then 18 days is 6 half-lives. 2-6 is 0.015625, so (48) (0.015625) or 0.75 g would remain.
The equation for half-life is
AT = A0 2 (-T/H)
where A0 is the starting activity, AT is the activity at some time T, and H is half-life in units of T.
Wiki User
∙ 15y ago1 g
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During an experiment a solution containing 24 mg of phosphorus 32 was preparedHow much of the isotope will remain after 28 days if its half-life is 14 days?
Your sample of phosphorous will literally half itself every 14 days. So after 14 days there is 12mg left. After 28 days, there is 6mg remaining.
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Because density is a "ratio".
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mass
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All of it, whatever it is, is stuff.
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a radio active substance has half life of 5 days initial mass of 12kg.how much the original isotope will remain after 10 days?
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Iodine 131 is radioactive and has a half life of about 8 days. After 32 days there would be approximately 5 milligrams remaining
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The volume and mass of a substance are independent of the substance itself, but depend upon how much there is of the substance The density of a substance is the relation between how much volume you have of a substance and how much mass that volume has (and vice-versa). It is independent of how much there is of the substance and is thus a characteristic of the substance.
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During an experiment a solution containing 24 mg of phosphorus 32 was preparedHow much of the isotope will remain after 28 days if its half-life is 14 days?
Your sample of phosphorous will literally half itself every 14 days. So after 14 days there is 12mg left. After 28 days, there is 6mg remaining.
What is the half life of uranium 238 if 85.719 percent of any given amount remains after 1 billion years?
Natural uranium contain 0,7204 % uranium 235.
What is the equation to calculate the percentage of each substance in a mixture?
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That depends on the density of the substance. The density tells you, precisely, how much mass a substance has per unit of volume.That depends on the density of the substance. The density tells you, precisely, how much mass a substance has per unit of volume.That depends on the density of the substance. The density tells you, precisely, how much mass a substance has per unit of volume.That depends on the density of the substance. The density tells you, precisely, how much mass a substance has per unit of volume.
Why does the density of a substance not change no matter how much of the substance you have?
Because density is a "ratio".
How long does methanphetamine stay in your system?
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