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Ch.5 - Gases
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.5 - Gases문제 60
5장, 문제 60

A sample of gas has a mass of 0.555 g. Its volume is 117 mL at a temperature of 85 °C and a pressure of 753 mmHg. Find the molar mass of the gas.

검증된 단계별 안내
1
Convert the temperature from Celsius to Kelvin by adding 273.15 to the Celsius temperature.
Convert the pressure from mmHg to atm using the conversion factor: 1 atm = 760 mmHg.
Use the Ideal Gas Law equation, PV = nRT, to solve for the number of moles (n) of the gas. Remember to use the appropriate units: P in atm, V in liters, R = 0.0821 L·atm/mol·K, and T in Kelvin.
Calculate the number of moles (n) by rearranging the Ideal Gas Law to n = PV / RT.
Determine the molar mass of the gas by dividing the mass of the gas sample by the number of moles calculated in the previous step.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
6m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Ideal Gas Law

The Ideal Gas Law is a fundamental equation in chemistry that relates the pressure, volume, temperature, and number of moles of a gas. It is expressed as PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature in Kelvin. This law allows us to calculate the behavior of gases under various conditions and is essential for determining the molar mass of a gas from its physical properties.
추천 영상:
가이드 코스
01:15
Ideal Gas Law Formula

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by dividing the mass of the gas sample by the number of moles present. Understanding molar mass is crucial for converting between mass and moles, which is necessary for stoichiometric calculations and determining the identity of a gas based on its physical properties.
추천 영상:
가이드 코스
02:11
Molar Mass Concept

Gas Properties and Conditions

Gas properties, including pressure, volume, and temperature, are interrelated and can significantly affect the behavior of a gas. Pressure is the force exerted by gas particles colliding with the walls of their container, while volume is the space the gas occupies. Temperature, measured in Kelvin, reflects the kinetic energy of gas particles. Recognizing how these properties interact is vital for applying the Ideal Gas Law and solving for unknowns like molar mass.
추천 영상:
가이드 코스
02:13
Ideal Gas Conditions Example
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