PTS Semester 1
LATIHAN
• 1/10
No. 1
Lapor
Unsur X memiliki dua isotop alami,
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
dan
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
. Jika massa atom relatif (Ar) unsur X adalah 35,5, tentukan kelimpahan isotop
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
dan
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
dalam persen.
A
Kelimpahan
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
= 75%,
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
= 25%
B
Kelimpahan
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
= 50%,
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
= 50%
C
Kelimpahan
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
= 25%,
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
= 75%
D
Kelimpahan
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
= 60%,
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
= 40%
E
Kelimpahan
35
e
x
t
X
^{35} ext{X}
35
e
x
t
X
= 80%,
37
e
x
t
X
^{37} ext{X}
37
e
x
t
X
= 20%
Sebelumnya
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