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What is half of 174?
Half of 174 is 87
Assume that the age of the Earth is 4.6 billion years. How many half-lives of Rubidium-87 does the age of the Earth represent?
The half-life of Rubidium-87 is about 48.8 billion years. To determine the number of half-lives in 4.6 billion years, you divide the age of the Earth by the half-life of Rubidium-87: 4.6 billion years / 48.8 billion years ≈ 0.0943 half-lives. Thus, the age of the Earth represents approximately 0.09 half-lives of Rubidium-87.
What is 87 and a half percent as a fraction?
87 and a half percent:87 1/2%= 87.5%= 0.875 in decimal= 875/1000 or 7/8 in fraction
Is a 87 a prime number?
No, the number 87 is composite.
How many years would it take half of the rubidium-87 atoms in piece of rock to change into strontium-87?
The half-life of rubidium-87 is approximately 48.8 billion years. This means it would take about 48.8 billion years for half of the rubidium-87 atoms in a rock sample to decay into strontium-87. Therefore, to see half of the rubidium-87 atoms change into strontium-87, you would need to wait this extensive period.
What is the whole number of 87?
87 is, itself, a whole number.
Is 87 an odd number?
yes
Is 87 prime number or a composite number?
87 is composite.
What is half of 8.7?
43.543.5 is half of 87.
Why isn't 87 a prime number?
87 is not a prime number because 87 is divisible by 3 and 29.
What is the half-life of Rb-87?
In my reference RB87 is stable, or has a half life of at least 4.9x1010 years.
What numbers can go in to 87?
The number 87 can be divided evenly by 1, 3, 29, and 87. These are the factors of 87, as they divide into 87 without leaving a remainder. Additionally, the number 87 is a composite number, as it has more than two factors.
