Potassium is a crucial element for the healthy operation of the
human body. Potassium occurs...
Chemistry, 21.05.2020 20:05 laureneb0403
Potassium is a crucial element for the healthy operation of the
human body. Potassium occurs naturally in our environment (and
thus our bodies) as three isotopes: Potassium – 39, Potassium – 40
and Potassium – 41. Their current abundances are 93.26%, 0.012%
and 6.728%. A typical human body contains about 3.0 grams of
potassium per kilogram of body mass.
1. How much Potassium – 40 is present in a person with a mass of
80 kg?
2. If, on average, the decay of Potassium – 40 results in 1.10 MeV
of energy absorbed, determine the effective dose (in Sieverts)
per year due to Potassium – 40 in an 80 kg body. Assume an
RBE of 1.2. The half-life of Potassium – 40 is 1.28 x 109 years.
Answers: 3
Chemistry, 22.06.2019 05:30
What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?
Answers: 1
Chemistry, 22.06.2019 10:00
How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?
Answers: 3
Chemistry, 22.06.2019 17:40
How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?
Answers: 3
Physics, 20.10.2020 03:01
Arts, 20.10.2020 03:01
Mathematics, 20.10.2020 03:01
English, 20.10.2020 03:01
Mathematics, 20.10.2020 03:01
Mathematics, 20.10.2020 03:01
World Languages, 20.10.2020 03:01
Mathematics, 20.10.2020 03:01
Physics, 20.10.2020 03:01
History, 20.10.2020 03:01