Question

An element a exist in two isotopic forms a^15 and a ^16 . if average atomic mass of a was found to be 15.24 then %relative abundance of a^15 is

Answer 1

1.Introduction – Installing an Orifice Meter

At the end of this post you will find the EMERSON document who explains the basic orifice plate installation guidelines, including:

orifice plate tap orientationorifice plate tapping locationsorifice tappingetc…

This post is mainly a set of rules for the orifice plate installation like an orifice flow meter installation guidelines. In order that a flow instrument may accurately read flow, it’s necessary that the installation comply with certain rules.

Answer 2

Answer: Percentage abundance of $A^{15}$ isotope is 76%

Explanation: We are given average atomic mass of element A is 15.24 amu.

Formula of average atomic mass:

$\text{Average atomic mass of an element}=\sum_{i=1}^n(\text{Atomic mass})_i(\text{Fractional abundance})_i$     ....(1)

We take fractional abundance of $A^{15}$ isotope = x

Mass of $A^{15}$ isotope = 15 amu

Fractional isotope of $A^{16}$ isotope = (1 - x)

Mass of $A^{16}$ isotope = 16 amu

Putting all the values in equation (1), we get

$15.24=(15)(x)+(16)(1-x)$

x = 0.76

As we need to find the percentage abundance, we multiply the fractional abundance by 100.

$\% \text{ abundance}=0.76\times 100$

Percentage abundance of $A^{15}$ = 76%