How big is the mass of a water molecule? Detailed answer

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How big is the mass of a water molecule? Detailed answer

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How big is the mass of a water molecule?

The mass of a water molecule (H2O) is equal to the product of the molecular mass of water (18,016) per atomic mass unit in grams (1,66057 / 1), that is, equal to 000 sextillionths of a gram (sextillion is the number represented by the unit with 000 zeros).

For a more visual representation, let's say that there are about 33 sextillion molecules in a milliliter of water. There are about a quintillion (billion billion) molecules in the average snowflake.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

What object meant to be destroyed turned into 100 indestructible?

In 1923, the American artist Man Ray created the work "Object Destined for Destruction". It was an ordinary metronome, on the pendulum of which was attached a piece of a photograph of a woman's eye. In 1957, a group of Parisian students broke into the building where this object was exhibited, seized it, and already on the street one of the thieves shot him with a pistol. Man Ray received insurance for this destruction and created 100 replicas, each of which was named "Indestructible Object". They can be seen in various museums and private collections.

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Coffee and tea drinkers are genetically different 28.11.2018

It is believed that the ability to feel a bitter taste protects animals from many troubles - since many toxins are just bitter, and if it starts to taste bitter in the mouth, then what is in the mouth must be immediately spit out. On the other hand, we drink beer, coffee, tea, not at all embarrassed by their bitterness. However, not everyone loves coffee, and it can be assumed that coffee drinkers simply feel its bitter component worse, so that other shades of coffee taste easily outweigh bitterness.

Researchers at Northwestern University and the QIMR Berghofer Medical Research Institute found that coffee drinkers are more sensitive to bitterness, and not just bitterness, but caffeine. The fact is that we have quite a lot of genes encoding bitter taste receptors, and mutations can get into them that enhance or weaken sensitivity to one or another bitter molecule. In particular, it is now known that there are receptors that sense caffeine, others quinine, and still others the synthetic 6-n-propylthiouracil, which is often used when studying the perception of bitter taste. For each of the three types of receptors, mutations have been described that change their sensitivity. It only remained to test whether people with caffeine sensitivities actually drink more coffee.

The researchers analyzed the genes of more than 400 people in the UK, who also reported on their lifestyle and habits - including how much they like tea, coffee and various alcoholic beverages. It turned out that those who, according to their genes, should be very sensitive to caffeine bitterness, drink coffee more than others, at least four times a day. At the same time, those who should be particularly sensitive to quinine and 6-n-propylthiouracil avoided coffee; those who were sensitive to the bitterness of 6-n-propylthiouracil drank less alcohol, especially red wine.

Scientists suggest that those who are especially sensitive to caffeine bitterness have managed to love it, because the vivacity that it gives outweighs the unpleasant taste. In this case, the more sensitive a person is to caffeine, the more he will drink coffee. Moreover, tea lovers will love tea because they never learned to love caffeine - because of the relatively low sensitivity of caffeine bitter receptors.

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