What is HSe in chemistry?
What is HSe in chemistry?
A selenide is a chemical compound containing a selenium anion with oxidation number of −2 (Se2−), much as sulfur does in a sulfide. In neutral conditions, hydrogen selenide ion, HSe−, is most common. In acid conditions, hydrogen selenide, H2Se, is formed.
What is a chemical name in chemistry?
The name of a chemical compound that shows the names of each of its elements or subcompounds. For example, the chemical name of aspirin is acetylsalicylic acid. Compare trivial name.
What is the chemical name of HC?
Hydrocarbon, any of a class of organic chemical compounds composed only of the elements carbon (C) and hydrogen (H). The carbon atoms join together to form the framework of the compound, and the hydrogen atoms attach to them in many different configurations.
What is the name for c5s8?
Cyclopentene
| PubChem CID | 8882 |
|---|---|
| Structure | Find Similar Structures |
| Chemical Safety | Laboratory Chemical Safety Summary (LCSS) Datasheet |
| Molecular Formula | C5H8 |
| Synonyms | CYCLOPENTENE 142-29-0 1-Cyclopentene UNII-ONM2CKV81Z ONM2CKV81Z More… |
What is the chemical name of water?
Oxidane
Why do they call it water?
The word water comes from Old English wæter, from Proto-Germanic *watar (source also of Old Saxon watar, Old Frisian wetir, Dutch water, Old High German wazzar, German Wasser, vatn, Gothic 𐍅𐌰𐍄𐍉 (wato), from Proto-Indo-European *wod-or, suffixed form of root *wed- (“water”; “wet”).
What are the two types of water?
Water molecules exist in two forms — different, but with almost identical physical parameters. Researchers refer to these two forms as ortho-water and para-water.
What are three water types?
Water can occur in three states: solid (ice), liquid, or gas (vapor).
- Solid water—ice is frozen water. When water freezes, its molecules move farther apart, making ice less dense than water.
- Liquid water is wet and fluid.
- Water as a gas—vapor is always present in the air around us.
What is the most abundant type of water on Earth?
The vast majority of water on the Earth’s surface, over 96 percent, is saline water in the oceans. The freshwater resources, such as water falling from the skies and moving into streams, rivers, lakes, and groundwater, provide people with the water they need every day to live.
What is the most abundant biomolecule on earth?
cellulose
Where is the Earth’s water?
Earth’s water is (almost) everywhere: above the Earth in the air and clouds, on the surface of the Earth in rivers, oceans, ice, plants, in living organisms, and inside the Earth in the top few miles of the ground.
How much land is there on earth?
The total land surface area of Earth is about square miles, of which about 33% is desert and about 24% is mountainous. Subtracting this uninhabitable 57% (mi2) from the total land area leaves square miles or 15.77 billion acres of habitable land.