# How many oxygen molecules are present in 113.97 liters of oxygen gas at STP?

At STP, one mole of any gas occupies 22.4 liters. This is called molar volume.

113.97 liters Ã· (22.4 L/mol) = 5.09 moles

Then convert moles to molecules (1 mole = 6.02 Ã— 1023 molecules)

5.09 moles Ã— (6.02 Ã— 1023 molecules/mol) = 3.06 Ã— 1024 molecules

### How many oxygen molecules are there in in 4 g of oxygen?

Assuming you mean oxygen gas, the number of molecules can be found by first finding the number of moles = mass of oxygen (4g) / Molecular mass of oxygen gas (32 g mol-1) This tells us there is 0.125 mol of oxygen gas present. The number of molecules present is given by the number of moles x the avogadro constant (6.022x10^23) So the number of oxygen gas molecules present is equal to 0.125 x 6.022x10^23…

### How do you convert liters per minute in oxygen saturation into percentage?

Take example that we r providing 2L/min of oxygen to a pt Human lungs are 2 liters in volume by average. So... Average breath rate is 12 breaths per minute. In one minute the patient would take in 24 liters of air. You are supplying 2 liters of pure oxygen + 4.8 liters from air (20% of the 24 liters (Percent oxygen in dry air)) = 6.8 liters of Oxygen per minute. 6.8 liters oxygen…