Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

23.1 L of an unknown gas has a mass of 28.85 g at STP What is the identity of the unknown gas?

Sagot :

The unknown gas : N₂

Further explanation

Given

Volume : 23.1 L

Mass : 28.85 g

Required

The identity of the unknown gas

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol

So mol for The unknown gas :

= 23.1 L : 22.4 L

= 1.0313

The molar mass of unknown gas :

= mass : mol

= 28.85 g : 1.0313

= 27.974 g/mol≈ 28 g/mol

23.1 L of nitrogen has a mass of 28.85 g at STP.

An unknown gas occupies 23.1 L at STP. We will calculate the moles of the gas, considering that 1 mole of an ideal gas occupies 22.4 L at STP.

[tex]23.1 L \times \frac{1mol}{22.4L} = 1.03 mol[/tex]

1.03 moles of the unknown gas have a mass of 28.85 g. The molar mass of the gas is:

[tex]M = \frac{28.85 g}{1.03 mol} = 28.0 g/mol[/tex]

A gas with a molar mass of 28.0 g/mol is likely to be nitrogen gas.

23.1 L of nitrogen has a mass of 28.85 g at STP.

Learn more: https://brainly.com/question/4172228

Thanks for using our service. We aim to provide the most accurate answers for all your queries. Visit us again for more insights. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Thank you for choosing Westonci.ca as your information source. We look forward to your next visit.