The simplified answer is 0.25-3x
Amu of unknown element = 40 - (20% * 40)
= 40 - 8
= 38 amu
therefore, the approximate weight of the unknown element is 38 amu.
hope this helps.
There is no mix number, it is 1/16.
Answer:
281
Step-by-step explanation:
68 out of 653 = 68/653 = 0.104
2700 * 0.104 = 281
