A pycnometer is a device used to measure densities. You are in the lab and need...

70.2K

Verified Solution

Question

Chemistry

A pycnometer is a device used to measure densities.You are in the lab and need to measure the density of an unknownsolid. The pycnometer is weighed empty and once again when it isfilled with methanol at 18Â°C (the density of methanol at 18Â°C is0.7914 g/mL). The following data is obtained:
Â Â Â Â Â Â Mass of thepycnometer: 127.111 g
Â Â Â Â Â Â Mass of thepycnometer and the methanol: 378.024 g
The pycnometer is emptied and 17.66 g of solid areplaced into it. It is then refilled with water at 18Â°C (density ofwater at 18Â°C = 0.99862 g/mL) and is found to have a mass of459.704 g.Â You are told the solid is one of thefollowing:
Copper: (d = 8.96 g/mL)
Gold: (d = 19.30 g/mL)
Silver (d = 10.50 g/mL)
What is the identity of the solid?

Answer & Explanation Solved by verified expert

4.2 Ratings (870 Votes)

The Pycnometer is that measuringinstrument whose volume is known and allows to know the density orspecific weight of any liquid by gravimetry at a certaintemperature The methodology that studies the See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member