Given a barometric pressure of 762.4 mmHg, what is the pressure in atmospheres (atm)?

• A. 1.01 atm
• B. 0.98 atm
• C. 1.00 atm
• D. 1.03 atm

Answer: (A)

Verified step by step guidance

1. Understand the relationship between mmHg and atm: 1 atm is equivalent to 760 mmHg.
2. Set up the conversion factor: Since 1 atm = 760 mmHg, you can use this ratio to convert mmHg to atm.
3. Write the conversion equation: \( \text{Pressure in atm} = \frac{\text{Pressure in mmHg}}{760} \).
4. Substitute the given pressure into the equation: \( \text{Pressure in atm} = \frac{762.4}{760} \).
5. Perform the division to find the pressure in atm, ensuring to keep track of significant figures based on the given data.