3 years ago

The definition of products

1 answer:

7 0

The term "product" refers to the result of one or more multiplications. For example, the mathematical statement would be read " times equals ," where.

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3 years ago

Once the food reaches the esophagus in the digestive system, the biggest difference between the frog and the human digestive sys

monitta

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What element has 2 electrons in its outermost energy level and is in the 2nd period on periodic table?

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4 years ago

A pure sample of bromine was vaporized and injected into a mass spectrometer and the data was plotted on the graph below. The ma

Whitepunk [10]

Answer:

$m_{Br-81}=80.945amu$

Explanation:

Hello,

In this case, since the percent abundance of Br-79 is 51.1% and that of the Br-81 is 48.9 %, we can write:

$m_{Br}=m_{Br-79}*51.1\%+m_{Br-81}*48.9\%$

Taking into account that the mass of bromine from the periodic table is 79.909 amu, the mass of Br-81 turns out:

$m_{Br-81}=\frac{m_{Br}-m_{Br-79}*51.1\%}{48.9\%} =\frac{79.909amu-78.918*0.511}{0.489} \\\\m_{Br-81}=80.945amu$

Best regards.

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3 years ago