Question

If the net weight of liquid oxygen in a cylinder is 3 lbs. how long will the liquid oxygen last if the oxygen flow is running at 1.5L/min? A) 4 hours and 29 minutes B) 11 hours and 28 minutes C) 28 hours and 40 minutes D) 34 hours and 24 minutes

Answer 1

The liquid oxygen will last approximately 0 hours and 0.796 minutes.

Step-by-step explanation:

To calculate how long the liquid oxygen will last, we need to find the volume of oxygen in liters. First, convert 3 lbs to grams by multiplying by 453.6 (1 lb = 453.6 g). Then, convert grams to liters using the density of liquid oxygen which is 1.14 g/mL. Next, divide the volume by the oxygen flow rate of 1.5 L/min to find the time in minutes. Finally, convert the time from minutes to hours and minutes.

1. Convert 3 lbs to grams: 3 lbs * 453.6 g/lb = 1360.8 g
2. Convert grams to liters: 1360.8 g * (1 mL / 1.14 g) * (1 L / 1000 mL) = 1.1963 L
3. Divide the volume by the oxygen flow rate: 1.1963 L / 1.5 L/min = 0.7975 min
4. Convert the time from minutes to hours and minutes: 0.7975 min * (1 hr / 60 min) = 0.01329 hr = 0 hr and 0.796 min

Therefore, the liquid oxygen will last approximately

0 hours and 0.796 minutes

.