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What is the atomic mass of phosphorous if phosphorous-29 has a percent abundance of 35.5%, phosphorous-30 has a percent abundance of 42.6%, and phosphorous-31 has a percent abundance of 21.9%?
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What is the atomic mass of phosphorous if phosphorous-29 has a percent abundance of

35.5%, phosphorous-30 has a percent abundance of 42.6%, and phosphorous-31 has a percent abundance of 21.9%?

User Ashlee
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1 Answer

4 votes

Answer:

29.864amu

Step-by-step explanation:


ar = (29 * 35.5 + 30 * 42.6 + 31 * 21.9)/(100 ) \\ ar = (2986.4)/(100) \\ ar = 29.864 amu

User Sergey Pugach
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