Chemistry: Find the average atomic mass for li if 7.5% of li atoms are 6li with a mass of 6.0151223 amu and 92.5% are 7li with a mass of 7.0160041 amu.

Find the average atomic mass for li if 7.5% of li

Ответ:

pattydixon6

02.02.2022

Chemistry

6.94 amu

Explanation:

Step 1: Given data

Mass of ⁶Li (m⁶Li): 6.0151223 amuAbundance of ⁶Li (ab⁶Li): 7.5% (0.075)Mass of ⁷Li (m⁷Li): 7.0160041 amuAbundance of ⁷Li (ab⁷Li): 92.5% (0.925)

Step 2: Calculate the average atomic mass (aam) of Li

We will use the following expression.

aam = m⁶Li × ab⁶Li + m⁷Li × ab⁷Li

aam = 6.0151223 amu × 0.075 + 7.0160041 amu × 0.925

aam = 6.94 amu

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Ответ:

kutubmia

12.07.2022

Chemistry

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Explanation:

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Find the average atomic mass for li if 7.5% of li atoms are 6li with a mass of 6.0151223 amu and 92.5% are 7li with a mass of 7.0160041 amu.

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