Answers by Leon Xiong
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Answers by Leon Xiong

Answers by Leon Xiong
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Fictitious element X has an a average atomic mass of 254.9 and only 2 isotopes, One of its isotopes has an abundance of 72.00 and a mass of 250.9 amu. What is the atomic mass of the second isotope? 265.
answered Mar 29, 2021
7 votes
109k views
Suppose a toy rocket is launched vertically upward from ground level with an initial velocity of 128 feet per second. If air resistance is ignored, the rocket's h height after t seconds is given by the
answered Feb 13, 2021
4 votes
227k views
Some bacteria can survive for long periods of time under harsh conditions because they can form a ______________.
answered Oct 26, 2020
6 votes
37.8k views
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