The Barometric Pressure Is 753.1 MmHg. What Is The Pressure In Atmospheres? (Calculate Your Answer To 3 Significant Figures.)
Atmospheric pressure is a crucial concept in chemistry, as it plays a significant role in various chemical reactions and processes. In this article, we will explore the relationship between barometric pressure and atmospheric pressure, and calculate the pressure in atmospheres given a barometric pressure of 753.1 mmHg.
What is Atmospheric Pressure?
Atmospheric pressure, also known as air pressure or barometric pressure, is the pressure exerted by the weight of the atmosphere on the Earth's surface. It is measured in units of millimeters of mercury (mmHg) or pascals (Pa). Atmospheric pressure is an essential factor in many chemical reactions, as it affects the rate and equilibrium of reactions.
Conversion from Barometric Pressure to Atmospheric Pressure
To convert barometric pressure to atmospheric pressure, we need to know the standard atmospheric pressure at sea level, which is 1013.25 mbar or 101325 Pa. We can use the following conversion factor:
1 atm = 101325 Pa 1 mbar = 1 Pa
Using this conversion factor, we can calculate the pressure in atmospheres as follows:
Calculating Pressure in Atmospheres
Given a barometric pressure of 753.1 mmHg, we can convert it to pascals using the following conversion factor:
1 mmHg = 133.322 Pa
Now, we can calculate the pressure in pascals:
753.1 mmHg x 133.322 Pa/mmHg = 100,300.3 Pa
Next, we can convert the pressure from pascals to atmospheres using the following conversion factor:
1 atm = 101325 Pa
Now, we can calculate the pressure in atmospheres:
100,300.3 Pa ÷ 101325 Pa/atm = 0.990 atm
Significant Figures
We are asked to calculate the answer to 3 significant figures. Therefore, we can round the answer to 0.990 atm.
Conclusion
In conclusion, we have calculated the pressure in atmospheres given a barometric pressure of 753.1 mmHg. We used the conversion factor between barometric pressure and atmospheric pressure to arrive at the answer. The pressure in atmospheres is 0.990 atm, which is accurate to 3 significant figures.
References
- National Institute of Standards and Technology (NIST). (2022). Standard Atmosphere.
- World Meteorological Organization (WMO). (2022). Guide to Meteorological Instruments and Methods of Observation.
Further Reading
- Atmospheric Pressure: A Comprehensive Review
- The Effects of Atmospheric Pressure on Chemical Reactions
- Measuring Atmospheric Pressure: Methods and Techniques
Frequently Asked Questions (FAQs) about Atmospheric Pressure ================================================================
In this article, we will address some of the most common questions about atmospheric pressure, including its definition, measurement, and effects on chemical reactions.
Q: What is atmospheric pressure?
A: Atmospheric pressure, also known as air pressure or barometric pressure, is the pressure exerted by the weight of the atmosphere on the Earth's surface. It is measured in units of millimeters of mercury (mmHg) or pascals (Pa).
Q: How is atmospheric pressure measured?
A: Atmospheric pressure is typically measured using a barometer, which is a device that measures the pressure exerted by the atmosphere. There are several types of barometers, including mercury barometers, aneroid barometers, and digital barometers.
Q: What is the standard atmospheric pressure at sea level?
A: The standard atmospheric pressure at sea level is 1013.25 mbar or 101325 Pa.
Q: How does atmospheric pressure affect chemical reactions?
A: Atmospheric pressure can affect the rate and equilibrium of chemical reactions. For example, an increase in atmospheric pressure can increase the rate of a reaction, while a decrease in atmospheric pressure can decrease the rate of a reaction.
Q: Can atmospheric pressure be used to predict weather patterns?
A: Yes, atmospheric pressure can be used to predict weather patterns. Changes in atmospheric pressure can indicate changes in the weather, such as the approach of a low-pressure system or a high-pressure system.
Q: What is the relationship between atmospheric pressure and altitude?
A: Atmospheric pressure decreases with an increase in altitude. This is because the weight of the atmosphere above decreases as you go higher.
Q: Can atmospheric pressure be used to predict the formation of clouds?
A: Yes, atmospheric pressure can be used to predict the formation of clouds. Low atmospheric pressure is often associated with the formation of clouds, while high atmospheric pressure is often associated with clear skies.
Q: How does atmospheric pressure affect the human body?
A: Atmospheric pressure can affect the human body in several ways, including the ears, sinuses, and lungs. Changes in atmospheric pressure can cause discomfort, pain, or even injury to these areas.
Q: Can atmospheric pressure be used to predict the formation of storms?
A: Yes, atmospheric pressure can be used to predict the formation of storms. Low atmospheric pressure is often associated with the formation of storms, while high atmospheric pressure is often associated with clear skies.
Q: What is the relationship between atmospheric pressure and temperature?
A: Atmospheric pressure is often related to temperature. In general, high atmospheric pressure is associated with cold temperatures, while low atmospheric pressure is associated with warm temperatures.
Q: Can atmospheric pressure be used to predict the formation of fog?
A: Yes, atmospheric pressure can be used to predict the formation of fog. Low atmospheric pressure is often associated with the formation of fog, while high atmospheric pressure is often associated with clear skies.
Conclusion
In conclusion, atmospheric pressure is an important factor in many areas of science and everyday life. By understanding the definition, measurement, and effects of atmospheric pressure, we can better predict weather patterns, chemical reactions, and other phenomena.
References
- National Institute of Standards and Technology (NIST). (2022). Standard Atmosphere.
- World Meteorological Organization (WMO). (2022). Guide to Meteorological Instruments and Methods of Observation.
- American Meteorological Society (AMS). (2022). Glossary of Meteorology.
Further Reading
- Atmospheric Pressure: A Comprehensive Review
- The Effects of Atmospheric Pressure on Chemical Reactions
- Measuring Atmospheric Pressure: Methods and Techniques