Question

uranium-235 has a half-life of about 700 million years. If 1 Kg of U-235 is put on a self in a laboratory how much of it will be left after 700 million years

Answer 1

now i think you should go and please leave them alone with me so i need milk and u provide cheap milk do give expensive milk then i learn how to go to market then u help me nicely and i learn spanish in school but how to learn portugese i not know so i go to libraray and study
25. Choose one of the following two prompts. 1. "I am a citizen of the world" is a key line of the story "When Greek Meets Greek" What does this line mean to you? Explain how this line fits the events of this story or another selection in this unit. Include details to support your explanation. 2. The poems in this unit share the theme of love: love of self, love of family, love of country, and love of a significant other. After deciding what kind of love is being addressed in each poem, describe the sensory details the poet uses to evoke this powerful emotion. Which poem affects you most?
Write a paragraph, including a topic sentence and supporting details, to answer the following question: What are the key elements of Jack London’s short story, Negore the Coward, that help to build suspense? Use specific details from the narrative to support your answer.
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Answer 2

Given that 700my is sufficient time for the whole tectonic system to have moved all the plates on the earth by a whole planet - NONE of the Uranium will be on a shelf in any recognisable form in that tine in the future - the shelf will be part of some other continent and mankind will be long gone.

Answer 3

(BTW - half of the Uranium will have decayed , wherever it is...)