Question

The element 'X' has isotopic masses 59.974u and 61.982u. If their abundance is 40℅and 60℅ respecting, calculate average atomic masses in u.​

Answer 1

Explanation:

Av atomic mass=

So ab at mass=

$\large{\blue{\bigstar}} \: \: {\underline{\boxed{\bold{\sf{ 59.7×60+61.9× \frac{40}{100} }}}}}$

at mass×x+another at mass

$\large{\red{\bigstar}} \: \: {\underline{\boxed{\blue{\sf{ }100-x)/100=3582+\frac{2476}{100} }}}}</p><p>$

$\large{\blue{\bigstar}} \: \: {\underline{\boxed{\red{\sf{ \qquad\longrightarrow\quad\sf \dfrac{\cancel{6058}}{\cancel{100}}}}}}}</p><p></p><p>$$\large{\blue{\bigstar}} \: \: {\underline{\boxed{\red{\sf{ }}\longmapsto=60.58}}}$

Hope It Helps!:)