To convert the pressure of oxygen from atmospheres (atm) to torr, we need to use the conversion factor between these two units. By definition, 1 atmosphere (atm) is equal to 760 torr.
Here's a step-by-step guide to finding the pressure in torr:
1. Identify the given pressure in atmospheres:
- The pressure in the tank is 2.50 atm.
2. Use the conversion factor between atmospheres and torr:
- 1 atm = 760 torr
3. Calculate the pressure in torr:
- Multiply the given pressure in atm by the conversion factor:
[tex]\[
\text{Pressure in torr} = \text{Pressure in atm} \times 760 \, \text{torr/atm}
\][/tex]
4. Perform the multiplication:
- [tex]\( 2.50 \, \text{atm} \times 760 \, \text{torr/atm} \)[/tex]
5. Result:
- The pressure in the tank is [tex]\( 1900 \, \text{torr} \)[/tex].
Thus, the pressure in the tank expressed in torr to three significant figures is:
[tex]\[
1900 \, \text{torr}
\][/tex]
