Chlorine, consisting of two isotopes of mass numbers 35 and 37, has an atomic mass of 35.5.
The relative abundance of the isotope of mass number 37 is?

vickyf

9 years ago

x% of 35 +(100-x)% of 37=35.5..

(35x÷100)+((3700-37x)÷100)=35.5,,,,,,,,

(35x+3700-37x)÷100=35.5........

(3700-2x)÷100=35.5.........

3700-2x=35.5×100......3700-2x=3550......-2x=3550-3700......

-2x=-150.......x=75..............rememba dat (100-x)% of 37.....which is 100-75=25% of 37

BrodaChoco

1 year ago

Let A be fraction of Cl-35
And B be fraction of Cl-37
A + B = 1
So B = 1 - A ....eqn1
35 × A + 37 × B = 35.5
35A + 37(1 - A) = 35.5 sub B in eqn1
35A + 37 - 37A = 35.5
-2A = -1.5
A = 0.75

B = 1 - 0.75
B = 0.25

Percentage of Cl-35 = 0.75 ×100 = 75%
Percentage of Cl-37 = 0.25 × 100 = 25%


35 × x

esindennisyahoo.com

10 years ago

lesson

Taiwo04112008

1 year ago

Pls can there be a solution to this question

MJoe

1 year ago

Omo 😭

Iamenoch

2 years ago

I think this should be the formula
Mx%+Mx%+Mx%
__________________
100

oluwaseun120

10 years ago

massnumber is the number of proton and neutron

Lotorious015

10 years ago

Need more explanation please