Answer:
54
Step-by-step explanation:
Use the bus-stop method to find it out
You can't. That's as simplified as it gets :)
Step-by-step explanation:
500e^0.0675t=1000
e^0.0657t=1000/500
e^0.0657t=2
take natural log of both side
lne^0.0657t=ln2
0.0657t=ln2
0.0657t=0.69314718056
t=0.69314718056/0.0657
t=10.55018539665
Answer:
33.33 mL of 50%
66.67 of 80%
Step-by-step explanation:
Let x = quantity of 50% methane.
Then,
0.50x + 0.80(100 - x) = 100 × 0.70
⇒ 0.50 x + 80 - 0.80 x = 70
⇒ -0.30 x = 70 - 80
⇒ -0.30 x = -10
⇒ 
⇒ x = 33.33 mL of 50%
and, 100 - 33.33 = 66.67 of 80%