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What does 35 round to tens?
40
How do round 44.69 to the greatest place?
40
Round off 40 to the nearest ten?
40
What percent of potassium-40 remains after two half-lives?
25%
What is 40 rounded to the nearest whole number?
When rounding a number to the nearest whole number, you look at the digit to the right of the decimal point. If that digit is 5 or greater, you round up; if it is 4 or less, you round down. In this case, 40 is already a whole number, so it does not need to be rounded.
What is emitted when potassium -40 decays?
Potassium-40 decays by emitting a beta particle, which is an electron. This decay process transforms potassium-40 into calcium-40.
Explain how you would calculate the number of neutrons in potassium -40?
To calculate the number of neutrons in an atom of potassium-40, subtract the atomic number (which is 19 for potassium) from the mass number (which is 40 for potassium-40). So, 40 (mass number) - 19 (atomic number) = 21 neutrons in potassium-40.
How you calculate the number of neutrons in potassium-40?
By subtracting 19 (atomic number of Potassium) from 40. You should come out with 21, which is the number of neutrons in potassium-40
What does the numbers 39 40 and 41 after the element name potassium refer to?
The numbers 39, 40, and 41 after the element name potassium refer to the mass number of the isotopes of potassium. Potassium has three isotopes: potassium-39, potassium-40, and potassium-41, which have 19, 20, and 21 neutrons respectively.
What is the half life of potassium-40?
The half life of potassium 40 is 1.3 billion years.
What is half life of potassium-40?
The half life of potassium 40 is 1.3 billion years.
How many neutrons do (K) potassium and potassium -40 have?
Potassium (K) typically has 19 neutrons in its nucleus. Potassium-40 is a radioactive isotope with 21 neutrons in its nucleus.
Why is the potassium cycle called cycle?
becase it is round round
What is the decay product of potassium?
The decay product of potassium in a process called beta decay is calcium. Potassium-40 undergoes beta decay to become argon-40, which then decays further to become calcium-40 over a long period of time.
What characteristics do atoms of argon-40 potassium-40 and calcium-40 have in common?
Argon-40, potassium-40, and calcium-40 all have 40 protons and electrons in their atoms, but they have different numbers of neutrons. They are all stable isotopes, although potassium-40 is radioactive and undergoes decay to form argon-40.
What are geological isobars?
potassium 40, Argon 40, Calcium 40.
How many neutrons in potassium 41?
the answer is 21. because you do 40-19
