Answer: yes they are the same
Explanation:
Answer:
The answer to your question is: 85.458 amu
Explanation:
data
Rubidium-85 A = 84.9118 amu abundance = 72.15%
Rubidium - 87 A = 86.9092 amu abundance = 27.85%
Atomic weight = ?
Atomic weight = 84.9118(0.7215) + 86.9092(0.2785)
Atomic weight = 61.2538 + 24.2042
Atomic weight = 85.458 amu
Solution :
Partition coefficient Kd
= 9.0
A). 1 x 200 mL extraction :
Let m be the mass of caffeine in the water
Mass of caffeine in = 100 - m
m = 10
Mass remaining in coffee = m = 10 mg
B). 2 x 100 mL extraction :
First extraction :
Let be the mass of caffeine in the water
Mass of caffeine in =
= 18.18
Mass remaining in coffee = = 18.18 mg
Second Extraction :
Let be the mass of caffeine in the water
Mass of caffeine in =
= 3.3
Mass remaining in coffee = = 3.3 mg
The two factors are latitude and depth