English name of hydrogen: hydrogen
Chemical formula: H 2
Hydrogen is the lightest gas in the world. Its density is very small, only 114 of air. In the standard state, the mass of1liter of hydrogen is 0.0899 g, which is a very low hydrogen concentration. Therefore, when we put in a balloon filled with aluminum and hydrogen, we can make our aluminum film balloon float in the air.
Hydrogen is a colorless, odorless, tasteless and flammable gas. Experiments with hydrogen in the air show that if the mixture reaches 4% of the total volume in 74.2% of the time, it will explode in case of fire. The mixture of hydrogen and fluorine, chlorine, oxygen, carbon monoxide and air is in danger of explosion, in which the mixture of hydrogen and fluorine gas can spontaneously occur at low temperature and in the dark, and the mixing ratio of 1 chlorine gas is 2: 1, which may cause an explosion. Because hydrogen is colorless and odorless, the burning flame is transparent and it is difficult to be detected when burning. You know, it contains hydrogen and fluorine, chlorine, oxygen and carbon monoxide, and we breathe into the air every day.
Helium English name: Helium
Chemical formula: he
The density of helium is 0. 1786 kg/m3, that is, the mass spectrum of 1 liter helium is 0. 17847 g, which is the minimum density except hydrogen. Therefore, when we fill the aluminum balloon with helium, we can also make our aluminum balloon rise into the air.
Helium is a colorless and odorless inert gas at room temperature. Here, we may not know what inert gas is. Inert gas means "noble" in English. In English, inert gas means "inert gas" or "inert gas". "Inertia" means "inertia" and "noble" means "noble and lazy". Why these elements, because it will not produce compounds with other elements under normal circumstances.
Liquid helium is the most difficult gas and very active. In the exploitation of helium-containing natural gas, the combustion that cannot be burned or has no industrial support may be as high as 7%. In addition, the helium-neon gas mixture is fractionated by liquid air. Because the content in the air is very thin, the output is low and the production cost is high, now when you need a lot of helium, it is the main part extracted from natural gas. For example, if the natural gas is more than 0.2%, there is helium with extraction value. To sum up, the extraction cost of helium is relatively high, so the current market price is more expensive than hydrogen. At present, the market price of a bottle of 6 cubic meters of helium is about 1.200 yuan per bottle, even in 700-800 yuan last year. Therefore, we will look at the relative prices of helium and hydrogen. If 6 cubic meters of helium can also expand into 300-350 aluminum balloons, it should be higher than 2 yuan, and the price of each balloon is only 0.20 US dollars, that is, the difference between each hydrogen gas is only 10 US dollars.
Here, what we want is that the bell of hydrogen and helium in the bar is very clear, but it should be clear. If we want to choose what kind of gas to use to inflate our aluminum balloons, besides the relevant laws of the country, I believe we have only heard of the balloons that exploded at the opening ceremony of this Olympic Games in Lanzhou not long ago. The use of hydrogen to inflate aluminum film balloons is a product state, which must be strictly managed and approved by a special casting institution. It is clearly stipulated that only one-time numbers are put anywhere, and the organization has a plan to release them. It is absolutely not allowed that units and individuals are not qualified to release any. Balloons are even more forbidden to hold.
Advantages and disadvantages, different people have different views, please pay attention to yourself.
Hydrogen and helium just talked about today, they just talked about it, and many friends often don't know what a helium balloon is and what a helium balloon is. Actually, this is a very simple truth. If you give us an aluminum helium balloon, it is the so-called aluminum balloon. If you give us an aluminum balloon filled with hydrogen, it is called an aluminum balloon.
Friends often ask what an aluminum balloon is and what an aluminum foil balloon is. In fact, this is not because the so-called materials are the same, because we wear the same clothes every day, which is the so-called clothes! Aluminum balloons and aluminum foil balloons are collectively referred to as materials, but our automatic inflatable balloons, advertising balloons, holiday balloons, balloon fonts, polar balloons, pearl balloons, music balloons, balloons, helium balloons, toy aluminum balloons and so on. Are made of this material.
Most wedding companies have it.