Water
| Use attributes for filter ! | |
| Density | 997 kg/m³ |
|---|---|
| Molar mass | 18. 01528 g/mol |
| 18.01528 g/mol | |
| Formula | H2O |
| Boiling point | 100 °C |
| Melting point | 0 °C |
| Iupac id | Oxidane, Water |
| Okra answer panel weight per gallon | Weight per gallon |
| Okra answer panel specific heat | Specific heat |
| Okra answer panel heat capacity | Heat capacity |
| Okra answer panel polarity | Polarity |
| Energy | USDA |
| Nutrition | Total Fat |
| Date of Reg. | |
| Date of Upd. | |
| ID | 820205 |
About Water
Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients.
Every Bitcoin payment 'uses a swimming pool of water'
...By Chris VallanceTechnology reporter, BBC NewsEvery Bitcoin transaction uses, on average, enough Water to fill " a back yard swimming pool" a new study suggests...
A23a: World's biggest iceberg on the move after 30 years
... The past year has seen it drifting at speed, and the berg is now about to spill beyond Antarctic Waters...
Boom in unusual jellyfish spotted in UK waters
...By Georgina RannardClimate and science reporterThe number of jellyfish spotted in UK Waters and on beaches increased by 32% in the past year, according to a survey by the Marine Conservation Society...
Experts call for tighter limits on 'forever chemicals' in water
...By Esme StallardClimate and science reporter, BBC NewsStricter limits are needed on levels of forever chemicals in UK drinking Water which are potentially harmful to human health, experts have warned...
Khan Younis: A Gaza city on its knees, now with a million mouths to feed
... Doctors say they have almost nothing to give the stream of new casualties - Water is rationed to 300ml a day for patients...
Warning AI industry could use as much energy as the Netherlands
... How much energy - and Water - does AI use? AI systems such as the large language models that power popular chatbots, like OpenAI s ChatGPT and Google s Bard, require warehouses full of specialist computers - called data centres - to work...
Migrants trying to reach the UK cross the Alps on foot
... Red Cross workers come to distribute food and Water - one telling me of migrants they found who needed their fingers amputated after catching frostbite...
Osiris-Rex: Asteroid Bennu 'is a journey back to our origins'
... How did the Earth form and why is it a habitable world? Where did the oceans get their Water; where did the air in our atmosphere come from; and most importantly, what is the source of the organic molecules that make up all life on Earth? " The prevailing thinking is that many of the key components were actually delivered to our planet early in its history in a rain of impacting asteroids, many of them perhaps just like Bennu...
Experts call for tighter limits on 'forever chemicals' in water
By Esme StallardClimate and science reporter, BBC News
Stricter limits are needed on levels of 'forever chemicals' in UK Drinking Water which are potentially harmful to human health, experts have warned.
In high doses these pollutants, known as PFAS, have been linked to serious health concerns including cancer and fertility issues.
The Royal Society of Chemistry urged The government to toughen regulations In Line with other countries.
The government said current safety standards were " exceptionally high".
'Forever chemicals' are a group of More Than 9,000 chemicals widely used in everyday products from Food Packaging to make-up because of their Water -resistant properties.
They enters waterways when products such as non-stick frying pans and clothes, some of which are treated with The chemicals, break down.
In The UK, Water companies are required to test for 47 different types of PFAS and if levels considered high-risk by The UK's Drinking Water inspectorate are reached it should not be used for drinking purposes -
The Royal Society of Chemistry (RSC) said that this still exposes people to levels considered medium-risk and does not take into account The thousands of other types of PFAS.
The RSC is proposing that The acceptable levels are reduced 10-fold, and that all PFAS are tested for. This would bring The UK closer In Line with new tighter limits in The US and tougher limits coming into effect next year in The EU.
The science 'has changed'Stephanie Metzger, policy adviser at The RSC told The Bbc that it made this call because The science had changed.
" Previous health guidelines showed that 100 nanograms per litre [of PFAS] was protective of human health, " She Said . " But there has been more research going on over The Years that has shown that perhaps effects to human health may occur at lower levels of exposure. "
Currently Drinking Water in The UK is categorised as medium-risk if there are between 10 and 100 nanograms of specific types of PFAS. In this case, Water companies are required to continue testing The Water but it can still be used.
Dr David Megson, senior lecturer in chemistry and environmental forensics at Manchester Metropolitan University , told The Bbc : " The overall risk is still what we would describe as relatively low, but it still just doesn't sit right with me that two different people can have different Water resources and have a different risk of potentially dying from exposure to chemical pollution. "
Traditional Water treatment approaches cannot remove PFAS so Water companies often blend different Water sources together to dilute The concentration. Some are also trying out emerging technologies like High Pressure membranes.
Using data from The open-access, The RSC estimates that a third of Water courses - not final Drinking Water - in England and Wales have medium-risk levels of PFAS, and less than 5% qualify as high-risk.
Aside from human health concerns, scientists are also worried about The impact of PFAS on wildlife living in Water considered to have high levels of The chemicals.
Although The high-risk graded Water is not used in Drinking Water , Dr Megson said: " It doesn't make much sense that for us to drink PFAS is incredibly toxic, but for animals To Live in that for their entire life and consume it, it's all of a sudden less toxic.
" We need to put that higher on The Agenda - are those environmental levels protective of wildlife in The Environment ? "
The RSC has also called on The government to establish a national inventory for PFAS and establish a national chemistry regulator. Since The UK left The EU one has not been in place.
A spokesperson from The Department for Environment, Food and Rural Affairs said: " Work is continuing across government to help us assess levels of PFAS occurring in The Environment , their sources and potential risks to inform future policy and regulatory approaches. "
Water UK, The Water industry Trade Association , said: " Every single day Water companies across The UK treat and distribute The Best Drinking Water in The World . Companies adhere to high standards set by regulators, with virtually all samples meeting their strict tests. "
Related TopicsSource of news: bbc.com
Water Photos
