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3 years ago

Chili can be made using ground meat or chunks of meat Which would you choose if you were in a hurry? Explain.

Chemistry

2 answers:

morpeh [17]3 years ago

7 0

I wouldchoose ground meet because it woukd cook much faster

goblinko [34]3 years ago

6 0

I would choose Ground meat if i was in a hurry Hope this helps:)

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Calculate the atomic mass for copper using the weighted average mass method. Express your answer using two decimal places and in

tatuchka [14]

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63. 55 amu

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Copper is known to exist in two different isotopes which are Cu-63 and Cu-65.

Cu-63 has an atomic mass of 62.93 amu and it has an abundance of 69.15%.

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Cu-65 has an atomic mass of 64.93 amu and it has an abundance of 30.85%

Therefore, using the weighted average mass method, the atomic mass of copper is:

Atomic mass of copper = (0.6915*62.93) amu + (0.3085*64.93) amu = 43.52 amu + 20.03 amu = 63.55 amu

Thus, the atomic mass of copper (express in two decimal places) is 63.55 amu

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