Answered

At Westonci.ca, we connect you with experts who provide detailed answers to your most pressing questions. Start exploring now! Join our platform to connect with experts ready to provide accurate answers to your questions in various fields. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

A sample of gas has a mass of 7.60g and occupies a volume of 2.45l at stp. Calculate molar mass of the gas.

Sagot :

amysun2025

Answer:

69.5 g/mol

Explanation:

Pre-Solving

We are given that a gas has a mass of 7.60 g and has a mass of 2.45 L at STP. We want to calculate the molar mass of this gas.

Since we want the molar mass, we need to find how many moles of gas there are.

Recall that STP = standard temperature and pressure, which is 273K and 1.00 atm.

So, we can use PV = nRT in order to find how many moles of gas there are.

Solving

Substitute the values into the equation.

[tex]1.00 atm * 2.45 L = n * 0.0821 \frac{atmL}{molK} * 273 K[/tex]

[tex]n = \frac{1.00 atm * 2.45 L }{0.0821 \frac{atmL}{molK} * 273K } = 0.10931009 mol[/tex] (do not round yet)

Now, divide the mole value found by the grams given.

So:

[tex]\frac{7.60 g}{0.10931009 mol} = 69.5 g/mol[/tex] (rounded to three sig figs).

Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.