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Author Topic: Which weighs more, cotton or gold?  (Read 1132 times)
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« on: May 26, 2020, 06:12:09 PM »

1) Which weighs more, an ounce of gold or an ounce of cotton?


2) Which weighs more, a pound of gold or a pound of cotton?


3) Which weighs more, an ounce of cotton or an ounce (fluid) of water?
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charby
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« Reply #1 on: May 26, 2020, 06:33:25 PM »

Troy?
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« Reply #2 on: May 26, 2020, 06:50:40 PM »

1 =
2 =
3 cotton oz < H20 Liquid oz
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« Reply #3 on: May 26, 2020, 06:59:40 PM »

1) A troy ounce is about 10% heavier than an av. (I can't spell it) ounce, so the ounce of gold is heavier.
2) A troy pound is only 12 troy ounces and a av. pound is 16 ounces, so even tho' the troy ounce is heavier it's not that much heavier.  So the pound of cotton is heavier
3) Water is slightly denser than one ounce per fluid ounce, so the water weighs more.
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« Reply #4 on: May 26, 2020, 07:00:22 PM »


3) Which weighs more, an ounce of cotton or an ounce (fluid) of water?

US fluid ounce or Imperial ?
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zxcvbob
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« Reply #5 on: May 26, 2020, 07:01:10 PM »

US fluid ounce or Imperial ?

You get the same answer either way Wink
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« Reply #6 on: May 26, 2020, 07:04:46 PM »

You get the same answer either way Wink

By my math
US fluid oz = 1.0430511 oz
Imperial fluid oz = 1.0000168 oz Pretty darn close to 1
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« Reply #7 on: May 26, 2020, 07:15:20 PM »

Really?  I thought an Imperial fl ounce had more volume than a US ounce, so I didn't look it up  Face Palm!
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« Reply #8 on: May 26, 2020, 07:18:02 PM »

A pound is a pound is a pound.   I can't believe this thread has gone on this long.   Grumpy Old Man    Huh?     Popcorn
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« Reply #9 on: May 26, 2020, 07:39:57 PM »

Me either, I "won" it right out the gate!
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« Reply #10 on: May 26, 2020, 08:46:31 PM »

 Ounce upon a midnight dreary, while I pondered, weak and weary...a

... that's all I got this late...
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2 + 2  =  4 1/2

Allllmost 2 + 2 = 5, but we're getting there !
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« Reply #11 on: May 26, 2020, 09:03:30 PM »

1) A troy ounce is about 10% heavier than an av. (I can't spell it) ounce, so the ounce of gold is heavier.
2) A troy pound is only 12 troy ounces and a av. pound is 16 ounces, so even tho' the troy ounce is heavier it's not that much heavier.  So the pound of cotton is heavier
3) Water is slightly denser than one ounce per fluid ounce, so the water weighs more.

This is correct.   cool

Ounce (avoirdupois) of cotton = 28.35 grams.
Ounce (troy) of gold = 31.10 grams.
Ounce (liquid) of water = 29.57 grams.
Pound (avoirdupois) of cotton = 453.6 grams.
Pound (troy) of gold = 373.3 grams.

The two "tricks" are that gold is measured in troy ounces, which is heavier than an ounce of cotton (measured in avoirdupois); and that a troy pound only has 12 troy ounces, compared to an avoirdupois pound which has 16 avoirdupois ounces.

The ounce of water is just thrown in for added confusion.   cheesy
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230RN
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« Reply #12 on: May 26, 2020, 09:06:17 PM »

Are those American or English grams?
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2 + 2  =  4 1/2

Allllmost 2 + 2 = 5, but we're getting there !
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« Reply #13 on: May 26, 2020, 09:08:47 PM »

Another reference:

https://www.free-bullion-investment-guide.com/troy.html
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« Reply #14 on: May 26, 2020, 09:09:22 PM »

Are those American or English grams?

Metric
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« Reply #15 on: May 26, 2020, 09:17:51 PM »

A pound is a pound is a pound.   I can't believe this thread has gone on this long.   Grumpy Old Man    Huh?     Popcorn

Not true.  A dog pound weighs way more than an avoirdupois pound.   Tongue
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« Reply #16 on: May 26, 2020, 09:50:19 PM »

Not true.  A dog pound weighs way more than an avoirdupois pound.   Tongue

That's because there are so few avoirdupois rescue agencies.
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Congrats, Amy. Stay strong.


« Reply #17 on: May 27, 2020, 02:18:50 AM »

Metric

I really don't carat all.  I take it all with 64.799 milligrams of salt anyway.  I'm going to take a 324mg aspirin pill now.

Terry, 230RN
« Last Edit: May 27, 2020, 02:49:51 AM by 230RN » Report to moderator   Logged

2 + 2  =  4 1/2

Allllmost 2 + 2 = 5, but we're getting there !
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« Reply #18 on: May 27, 2020, 05:47:24 AM »

African or European swallow?

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« Reply #19 on: May 27, 2020, 06:08:22 AM »

Not true.  A dog pound weighs way more than an avoirdupois pound.   Tongue
Face Palm!

If you say so .....  rolleyes
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« Reply #20 on: May 27, 2020, 06:18:43 AM »

African or European swallow?

Brad

That's what she said.
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« Reply #21 on: May 27, 2020, 06:52:57 AM »

Technically, a "fluid" can be liquid or gas.  How do you weigh water vapor?
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Congrats, Amy. Stay strong.


« Reply #22 on: May 27, 2020, 07:52:28 AM »

^ You can dense it out.
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2 + 2  =  4 1/2

Allllmost 2 + 2 = 5, but we're getting there !
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« Reply #23 on: May 27, 2020, 07:56:05 AM »

Quote
Technically, a "fluid" can be liquid or gas.

https://en.wikipedia.org/wiki/Fluid_ounce

ôA fluid ounce (abbreviated fl oz, fl. oz. or oz. fl. ů is a unit of volume (also called capacity) typically used for measuring liquids.ö   Grumpy Old Man
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« Reply #24 on: May 27, 2020, 08:06:38 AM »

Technically, a "fluid" can be liquid or gas.  How do you weigh water vapor?

I have an old book with steam tables that have that sort of information.

However at standard temperature and pressure, water vapor is more commonly encountered as a mixture with air.  For that, psychometric charts list the specific volume of air/water vapor mixtures.

Fun side note, as more water vapor is added to air at a constant temperature, the specific volume increases - or in other words, the density decreases.
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