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This article was the subject of a Wiki Education Foundation-supported course assignment, between 24 August 2021 and 20 December 2021. Further details are available on the course page. Student editor(s): Jkierna6.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 07:18, 17 January 2022 (UTC)[reply]

Sum vs product of concentrations

@Smokefoot:, are you sure in changing "product of the concentrations" to "sum of the concentrations" here? The product of the concentrations/(or to be more correct, activities) would remain constant as K_w.. Galobtter (pingó mió) 17:56, 9 August 2018 (UTC)[reply]

Oops and yikes. --Smokefoot (talk) 18:03, 9 August 2018 (UTC)[reply]

Hard water

explain Hard water and soft water and how to reduce the hardness — Preceding unsigned comment added by 49.206.5.28 (talk) 12:34, 20 March 2019 (UTC)[reply]

Because it is such a huge topic, we have lots of articles about water. This article is about certain technical properties of water. As the Hatnote says: see Water for a more general discussion. That article will take you to Water hardness. -Arch dude (talk) 16:17, 28 June 2019 (UTC)[reply]

This article has been thoroughly written. The lead section lays the foundation for the rest of the article, explaining the basics of water. The article does a great job building upon information to create a cohesive explanation of water and its many qualities. The article also references many different sources. Jkierna6 (talk) 06:02, 11 September 2021 (UTC)Jkierna6[reply]

Adding theoretic vapour / actual density percentage lines to phase diagram

In every point of the phase diagram in section "Triple point" there is a certain quotient "actual molar volume of water / (theoretic or actual) molar volume of vapour water". In the orange coloured vapour area this would be everywhere 100%, molar volume there is simply R × T / p, while in the liquid and solid areas certain distinct percentage lines result which should also be a bit visible? --LKreissig (talk) 17:03, 16 May 2022 (UTC)[reply]

What government can do to provide equal accessed of water

what government can do to provide equal access to water Manalony (talk) 22:19, 22 May 2024 (UTC)[reply]

Not relevant to this topic. Sorry. Velella ^{Velella Talk} 07:29, 23 May 2024 (UTC)[reply]

Try the article Human right to water and sanitation. Dirac66 (talk) 12:18, 23 May 2024 (UTC)[reply]

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+==Wiki Education Foundation-supported course assignment==
+[[File:Sciences humaines.svg|40px]] This article was the subject of a Wiki Education Foundation-supported course assignment, between <span class="mw-formatted-date" title="2021-08-24">24 August 2021</span> and <span class="mw-formatted-date" title="2021-12-20">20 December 2021</span>. Further details are available [[Wikipedia:Wiki_Ed/Villanova_University/MSE_2301_Fall_2021_(Fall_2021)|on the course page]]. Student editor(s): [[User:Jkierna6|Jkierna6]].
+{{small|Above undated message substituted from [[Template:Dashboard.wikiedu.org assignment]] by [[User:PrimeBOT|PrimeBOT]] ([[User talk:PrimeBOT|talk]]) 07:18, 17 January 2022 (UTC)}}
-== Errors ==
+==Sum vs product of concentrations==
+{{ping|Smokefoot}}, are you sure in changing "product of the concentrations" to "sum of the concentrations" [https://en.wikipedia.org/enwiki/w/index.php?title=Properties_of_water&diff=854207744&oldid=854207380 here]? The product of the concentrations/(or to be more correct, activities) would remain constant as K<sub>w</sub>.. [[User:Galobtter|Galobtter]] ([[User talk:Galobtter|pingó mió]]) 17:56, 9 August 2018 (UTC)
+:Oops and yikes.  --[[User:Smokefoot|Smokefoot]] ([[User talk:Smokefoot|talk]]) 18:03, 9 August 2018 (UTC)
-=== Molar mass of water ===
+== Hard water ==
+explain Hard water and soft water and how to reduce the hardness  <!-- Template:Unsigned IP --><small class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/49.206.5.28|49.206.5.28]] ([[User talk:49.206.5.28#top|talk]]) 12:34, 20 March 2019 (UTC)</small> <!--Autosigned by SineBot-->
-: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.[[User:Abitslow|Abitslow]] ([[User talk:Abitslow|talk]]) 14:08, 24 February 2015 (UTC)
+:Because it is such a huge topic, we have lots of articles about water. This article is about certain technical properties of water. As the Hatnote says: see [[Water]] for a more general discussion. That article will take you to [[Water hardness]]. -[[User:Arch dude|Arch dude]] ([[User talk:Arch dude|talk]]) 16:17, 28 June 2019 (UTC)
+This article has been thoroughly written. The lead section lays the foundation for the rest of the article, explaining the basics of water. The article does a great job building upon information to create a cohesive explanation of water and its many qualities. The article also references many different sources. [[User:Jkierna6|Jkierna6]] ([[User talk:Jkierna6|talk]]) 06:02, 11 September 2021 (UTC)Jkierna6
-::There also reads: '''Percentage of elements in water by mass: 11.1% hydrogen, 88.9% oxygen.'''<br />
-::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. [[Special:Contributions/212.50.203.198|212.50.203.198]] ([[User talk:212.50.203.198|talk]]) 14:48, 7 April 2015 (UTC)
+== Adding theoretic vapour / actual density percentage lines to phase diagram ==
-===Partial vapor pressure of triple point of water: 611.73 Pa or 611.657 Pa?===
+In every point of the phase diagram in section "Triple point" there is a certain quotient "actual molar volume of water / (theoretic or actual) molar volume of vapour water". In the orange coloured vapour area this would be everywhere 100%, molar volume there is simply R × T / p, while in the liquid and solid areas certain distinct percentage lines result which should also be a bit visible? --[[User:LKreissig|LKreissig]] ([[User talk:LKreissig|talk]]) 17:03, 16 May 2022 (UTC)
-The value 611.73 Pa is cited here as well as in all related artciles in Wikipedia. But the source is not provided! The most recent reference which I could find on this, [http://onlinelibrary.wiley.com/doi/10.1256/qj.04.94/abstract? Murphy and Koop (QJRMS, 2005)] gives 611.657 +/- 0.01 Pa and this is also the value used by the International Association for the Properties of Water and Steam ([http://www.nist.gov/srd/upload/jpcrd477.pdf Wagner et al., J.Phys.Chem.Ref.Data,1994]). Unless the value 611.73Pa can be referenced properly, I would recommend to use the internationally recommended value.
-[[User:Simon Chabrillat|Simon Chabrillat]] ([[User talk:Simon Chabrillat|talk]]) 10:51, 23 February 2016 (UTC)
+== What government can do to provide equal accessed of water ==
-== Specific vs Molar Heat Capacity ==
-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? [[User:Thelbert|Thelbert]] ([[User talk:Thelbert|talk]]) 21:49, 16 December 2015 (UTC)
+what government can do to provide equal access to water [[User:Manalony|Manalony]] ([[User talk:Manalony|talk]]) 22:19, 22 May 2024 (UTC)
+:Not relevant to this topic. Sorry. <span style="background-color:lightblue">'''''&nbsp;[[User:Velella|Velella]]&nbsp;'''''</span><span style="background-color:lightblue">&nbsp;<sup>''[[User talk:Velella|Velella]] Talk ''</sup>&nbsp;</span> 07:29, 23 May 2024 (UTC)
-I am sorry, but I suppose you must have done an error in normal temperature water density  - "Liquid: 999.9720 kg/m3" should be "Liquid: 997.20 kg/m3" instead. Let us look at https://water.usgs.gov/edu/density.html . I went through chemical high school, I remember there was a "room" to argue that "water density is not exactly 1 (g/ml)". If it were by just 0.003%, no one would be seriously complaining, but 0.3% is something you can distinguish by normal balances.  <!-- Template:Unsigned --><small class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:1x2trfn|1x2trfn]] ([[User talk:1x2trfn#top|talk]] • [[Special:Contributions/1x2trfn|contribs]]) 21:57, 16 February 2017 (UTC)</small> <!--Autosigned by SineBot-->
+::Try the article [[Human right to water and sanitation]]. [[User:Dirac66|Dirac66]] ([[User talk:Dirac66|talk]]) 12:18, 23 May 2024 (UTC)
-== External links modified ==
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-== Semi-protected edit request on 8 November 2016 ==
-{{edit semi-protected|Properties of water|answered=y}}
-You could also die from drowning in water
-[[Special:Contributions/2601:44:8700:36FC:1DAB:7038:90F9:45AB|2601:44:8700:36FC:1DAB:7038:90F9:45AB]] ([[User talk:2601:44:8700:36FC:1DAB:7038:90F9:45AB|talk]]) 13:24, 8 November 2016 (UTC)
-:'''True''' Which is why [[drowning]] appears at the top of the Hazards list, in the box on the right hand side - [[User:Arjayay|Arjayay]] ([[User talk:Arjayay|talk]]) 13:35, 8 November 2016 (UTC)
-== Semi-protected edit request on 12 January 2017 ==
-{{edit semi-protected|Properties of water|answered=yes}}
-Correct first sentence to state that water is a liquid at room temperature. [[User:Blackwatch12|Blackwatch12]] ([[User talk:Blackwatch12|talk]]) 00:58, 12 January 2017 (UTC)
-:Seems it says that now: "that is at room temperature a tasteless and odorless liquid" 'tho' perhaps that wording is a bit stilted ... hmm. [[User:Vsmith|Vsmith]] ([[User talk:Vsmith|talk]]) 01:33, 12 January 2017 (UTC)
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