Radioactivity in the body. Potassium is an essential element that normally comprises about 0.30% of a...
Radioactivity in the body. Potassium is an essential element that normally comprises about 0.30% of a person's body mass. 0.012% of potassium is the radioactive 40K, with half-life 1.28×109 years.
What's the potassium activity in a 60 kg person?
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Radioactivity in the body. Potassium is an
essential element that normally comprises about 0.30% of a...
will rate. thanks 1.248 X 109 EXAM 13. A 75.0kg man typically contains about 300g of potassium in his body. Given th...
will rate. thanks
1.248 X 109 EXAM 13. A 75.0kg man typically contains about 300g of potassium in his body. Given that potassium-40 makes up 0.012% of any sample of potassium and the half-life of potassium-40 is 1.248 x 109 years, how many radioactive decays per year come from his body due to potassium-40? Laboratory 15 | Radioactivity of Potassium - 40 183
After the sudden release of radioactivity from the Chernobyl nuclear reactor accident in 1986, the radioactivity...
After the sudden release of radioactivity from the Chernobyl nuclear reactor accident in 1986, the radioactivity of milk in one region of Poland rose to 1450 Bq/L due to iodine-131 present in the grass eaten by dairy cattle. (Note that the radioactivity was higher in other regions of Poland.) Radioactive iodine, with half-life 8.04 days, is particularly hazardous because the thyroid gland concentrates iodine. The Chernobyl accident causeda measurable increase in thyroid cancers among children in Belarus. (a) For comparison,...
The average banana contains 0.40 g of potassium and 0.012% of naturally occurring potassium is 40K,...
The average banana contains 0.40 g of potassium and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 x 109 years and an atomic mass of 39.964 u. What is the activity of a freshly picked bunch containing three bananas? activity: Вq
Natural potassium contains 40K, which has a half-life of 1.277×109 y. What mass of 40K in...
Natural potassium contains 40K, which has a half-life of 1.277×109 y. What mass of 40K in a person would have a decay rate of 4140 Bq? What is the fraction of 40K in natural potassium, given that the person has 140 g in his body? (These numbers are typical for a 70-kg adult.)
The average banana contains 0.41 g of potassium and 0.012% of naturally occurring potassium is 40K,...
The average banana contains 0.41 g of potassium and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 x 10 years and an atomic mass of 39.964 u. What is the activity of a freshly picked pair of bananas? activity: Вq
The average banana contains 0.44 g of potassium and 0.012% of naturally occurring potassium is 40K,...
The average banana contains 0.44 g of potassium and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 x 10° years and an atomic mass of 39.964 u. What is the activity of a freshly picked bunch containing six bananas? activity: Вg
The average banana contains 0.436 g of potassium, and 0.012% of naturally occurring potassium is 40K,...
The average banana contains 0.436 g of potassium, and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 × 10^9 years and an atomic mass of 39.964 u. What is the activity of a freshly picked bunch containing three bananas? The activity is the number of 40K decays that occur per unit time. Activity is commonly measured in units of Becquerel (Bq), which is defined as decays per second. Recall that the atomic mass unit u...
If naturally occurring 40K is responsible for a dose equivalent of 0.16 mSv/y of background radiation, calculate the mass of 40K that must be inside the 59 kg body of a woman to produce this dose. Ass...
If naturally occurring 40K is responsible for a dose equivalent of 0.16 mSv/y of background radiation, calculate the mass of 40K that must be inside the 59 kg body of a woman to produce this dose. Assume that each 40K decay emits a 1.30 MeV β, and that 40% of this energy is absorbed inside the body. The half life of 40K is 1.25 × 109 years.
Technetium (Tc) is a radioactive element widely used in modern medical imaging (radiology). Its existence was...
Technetium (Tc) is a radioactive element widely used in modern medical imaging (radiology). Its existence was predicted in 1871 by D. Mendeleev, who noticed a gap between then known elements Molybdenum (42) and Ruthenium (44) in the periodic table he envisioned. Technetium used in radiology is a metastable isotope 99Tc that emits gamma photons (half-life T1/2 = 6 h). A solution containing trace amounts of 99Tc (the tracer) is administered to a patient intravenously, and after the isotope uniformly spreads...
write a summary of what you read. 1. You have a teenaged friend who is a...
write a summary of what you read.
1. You have a teenaged friend who is a vegan and she has just
found out that her mother has osteoporosis. She is very worried
about her bone health but will not eat any animal products. Give
her any three suggestions that she could follow to ensure the
future health of her bones.
2. Many people assume that calcium and vitamin D are the only two
nutrients that are essential to bone health,...
will rate. thanks
1.248 X 109 EXAM 13. A 75.0kg man typically contains about 300g of potassium in his body. Given that potassium-40 makes up 0.012% of any sample of potassium and the half-life of potassium-40 is 1.248 x 109 years, how many radioactive decays per year come from his body due to potassium-40? Laboratory 15 | Radioactivity of Potassium - 40 183
After the sudden release of radioactivity from the Chernobyl nuclear reactor accident in 1986, the radioactivity of milk in one region of Poland rose to 1450 Bq/L due to iodine-131 present in the grass eaten by dairy cattle. (Note that the radioactivity was higher in other regions of Poland.) Radioactive iodine, with half-life 8.04 days, is particularly hazardous because the thyroid gland concentrates iodine. The Chernobyl accident causeda measurable increase in thyroid cancers among children in Belarus. (a) For comparison,...
The average banana contains 0.40 g of potassium and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 x 109 years and an atomic mass of 39.964 u. What is the activity of a freshly picked bunch containing three bananas? activity: Вq
The average banana contains 0.41 g of potassium and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 x 10 years and an atomic mass of 39.964 u. What is the activity of a freshly picked pair of bananas? activity: Вq
The average banana contains 0.44 g of potassium and 0.012% of naturally occurring potassium is 40K, which has a half-life of 1.248 x 10° years and an atomic mass of 39.964 u. What is the activity of a freshly picked bunch containing six bananas? activity: Вg
write a summary of what you read.
1. You have a teenaged friend who is a vegan and she has just
found out that her mother has osteoporosis. She is very worried
about her bone health but will not eat any animal products. Give
her any three suggestions that she could follow to ensure the
future health of her bones.
2. Many people assume that calcium and vitamin D are the only two
nutrients that are essential to bone health,...
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