Talk:Properties of water

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Errors[edit]

In the first 10 seconds of reading this article, I tripped over a ridiculous claim. So, assuming that its generally that poorly written, I figured I should start an Error section and those more inclined to fix the rubbish accumulating here can.

The Table claims that the molar mass of water is "18.01528(33)". This is wrong. Oxygen has an atomic mass of 15.999(4), H is 1.008(1). If I am able to count, those both are THREE significant digits to the right of the decimal point. If you don't understand the problem reporting 5 places when it just isn't possible to know more than 3, then you shouldn't be editing this. (I am not saying that, for a particular sample of water, 5 (or more) places aren't MEASURABLE. I am saying reporting that value is at best misleading (since it can ONLY refer to a specific sample or set of samples) and so is technically WRONG (it isn't "the value" for an arbitrary sample).) Additionally, a citation should be provided for this value.Abitslow (talk) 14:08, 24 February 2015 (UTC)
There also reads: Percentage of elements in water by mass: 11.1% hydrogen, 88.9% oxygen.
That is true, if calculated with H = 1 and O = 16. However, if the more accurate values are used, it is 11.2% hydrogen, 88,8% oxygen. 212.50.203.198 (talk) 14:48, 7 April 2015 (UTC)

MfD of related draft article Liquid crystal water[edit]

See Wikipedia:Miscellany for deletion/Draft:Liquid crystal water.

I think editors interested in this topic would be appreciated if they could give opinions on whether this is topic of any worth. Specifically, I think the test is whether this topic, Liquid crystal water, would be worth paragraphs of coverage at this or another mainspace article. --SmokeyJoe (talk) 23:50, 13 May 2015 (UTC)

The MFD is still open, who/where do we nudge to get it settled? Roger (Dodger67) (talk) 17:54, 13 June 2015 (UTC)

A Question on the Density of Ice[edit]

The book "Chilled" by Tom Jackson indicates that most of the expansion that occurs when water changes to ice is due to dissolved gas in the water (p. 87), and that liquid water would expand by only a few percent when changing to ice if it were boiled first to remove the dissolved gases. Is this true? Since this article focuses on pure water (i.e., without any dissolved gases), should this be in the article? Psalm 119:105 (talk) 12:06, 12 October 2015 (UTC)

Specific vs Molar Heat Capacity[edit]

The intensive heat capacity value in the info box is per mole (Molar Heat Capacity) but labeled "Specific Heat Capacity", which is per mass. Is there a reason for this? Thelbert (talk) 21:49, 16 December 2015 (UTC)