Answer:
The answer to your question is 22.9 g
Step-by-step explanation:
Data
mass = 130 g
rate = 22%
time = 7 min
Process
1.- Calculate the mass remaining after each minute
130 g ----------------- 100
x ----------------- 22
x = (22 x 130) / 100
x = 28.6 g
mass remaining = 130 - 28.6 = 101.4 g
101.4 g------------------ 100
x ------------------ 22
x = (22 x 101) / 100
x = 22.22
mass remaining = 101.4 - 22.22
= 79.18
79.18 g ----------------- 100
x ----------------- 22
x = (22 x 79.18)/100
x = 17.41
mass remaining = 79.18 - 17.41
= 61.76
61.76 --------------------- 100
x ---------------------- 22
x = (22 x 61.76)/100
x = 13.59
mass remaining = 61.76 . 13.59
= 48.17 g
48.17 g ----------------- 100
x ----------------- 22
x = (22 x 48.17)/100
x = 10.59
mass remaining = 48.17 - 10.59
= 37.57 g
37.57 g ----------------- 100
x ----------------- 22
x = (22 x 37.57) / 100
x = 8.26 g
mass remaining = 37.57 - 8.26
= 29.3
29.3 g ------------------- 100
x -------------------- 22
x = (22 x 29.3)/100
x = 6.45
mass remaining = 29.3 - 6.45
= 22.85 g
