B Specific Gravity of Various Types of Gold

AI Thread Summary
The specific gravity of gold varies with its karat, with pure gold (24-karat) being the baseline. Alloys, such as 10-karat and 18-karat gold, contain other metals that affect their specific gravity, making it region-specific. Users suggest that to find specific gravities for various karats, one may need to research the densities of the specific alloys used. The discussion highlights the challenge of obtaining accurate specific gravity values without precise alloy compositions. Ultimately, a graph plotting specific gravity against karats is expected for the assignment.
sam ham
Messages
2
Reaction score
0
Hi guys. This is my first time posting, so I am sorry if it is in the wrong section. My professor wants me to fin the specific gravity's for gold of 10 karat through 24 karat. He hasn't given us the mass or anything, he just says that we should be able to look them up online. I've been looking online for a few days but I couldn't find all of them. Am i missing something?
 
Physics news on Phys.org
sam ham said:
My professor wants me to fin the specific gravity's for gold of 10 karat through 24 karat.

Pure gold, or 24-karat, is generally considered too soft for use in jewelry, so it is alloyed with other metals to increase its strength.

Eighteen-karat gold is 18/24ths, or three-quarters pure gold.
Jewelry of this fineness is marked "18k" or "750," the European designation meaning 75 percent gold.

the specific gravity of gold is a fixed quantity.
the mixture of other metals is region specific -like Archemedies testing the king's crown had specific mixtures - so carat to sp. gr. of gold does not carry any meaning.
 
I agree it inst that useful but why would my professor ask for sg's? He expects a graph of SG's plotted with karats.
 
sam ham said:
He expects a graph of SG's plotted with karats.

then i fear you will have to mix other metals.say copper etc. and find the average sp. gr. for the different carat gold.
 
"Density of 18 karat gold" 36.300 hits
"Density of 18K gold" 223,000 hits
"Specific gravity of 18 karat gold" 115.000 hits
"Specific gravity of 18K gold" 19,500 hits
 

Thread 'Need help understanding particle physics and quantum physics'

So I know that electrons are fundamental, there's no 'material' that makes them up, it's like talking about a colour itself rather than a car or a flower. Now protons and neutrons and quarks and whatever other stuff is there fundamentally, I want someone to kind of teach me these, I have a lot of questions that books might not give the answer in the way I understand. Thanks
View full post »

Thread 'Raman Spectroscopy help'

I am attempting to use a Raman TruScan with a 785 nm laser to read a material for identification purposes. The material causes too much fluorescence and doesn’t not produce a good signal. However another lab is able to produce a good signal consistently using the same Raman model and sample material. What would be the reason for the different results between instruments?
View full post »

Similar threads

B Calculate Gravity with Ruzanna from the Netherlands
Replies
30
Views
4K
B Some Questions About Gold Nanoparticles
Replies
4
Views
3K
B Does Human Population Growth Impact Lunar Orbit?
Replies
13
Views
2K
B Is F = -mg a mistake in orbital mechanics?
Replies
5
Views
7K
Nice to meet you all
Replies
1
Views
208
Other Should I Pursue a Thesis Topic That Doesn't Initially Interest Me?
Replies
5
Views
2K
B Listen to Record from Planet w/ Extreme Gravity
Replies
21
Views
1K
I Horizontal Force on a trapeze pivot
Replies
2
Views
2K
I The standard model from loop quantum gravity via spinors octonions
Replies
26
Views
4K
B How to improve problem solving skills
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top