Answer:
1. Tropical Climate
Explanation:
Due to the high heat in tropical climates, the moisture speeds up chemical weathering
Answer:
Compound: two or more different atoms chemically bonded together. Molecule: two or more different or same atoms chemically bonded together. Element: one single atom. A mixture contains two or more substances (elements, lattices, molecules, compounds), that are not chemically bonded together.
Explanation:
Answer:
Hope this helps u!!
Explanation:
A useful application of half-lives is radioactive dating. This has to do with figuring out the age of ancient things. If you could watch a single atom of a radioactive isotope, U-238, for example, you wouldn't be able to predict when that particular atom might decay. :) :)
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Answer:
Helium is created from hydrogen in the sun's core.
Four hydrogen-1 nuclei fuse to produce
- one helium-4 nucleus, two neutrons,
- two positrons, and
- two electron neutrinos.
Explanation:
Step One:
.
Two hydrogen-1 nuclei fuse. One proton will convert to a neutron. The products will be
- one hydrogen-2 nucleus,
- one positron, and
- one electron neutrino.
Step Two:
.
There are plenty of hydrogen-1 nuclei available in the core of the sun. The hydrogen-2 nucleus from step one will fuse with a hydrogen-1 nucleus. The product is
Step Three
.
Two helium-3 nuclei from step two react with each other. The products are:
- one helium-4 nucleus, and
- two hydrogen-1 nuclei.
The overall reaction will be:
.
![{\rm 4\; ^1_1 H \to ^4_2 He + 2\; e^{+}} + v_\text{e}](https://tex.z-dn.net/?f=%7B%5Crm%204%5C%3B%20%5E1_1%20H%20%5Cto%20%5E4_2%20He%20%2B%202%5C%3B%20e%5E%7B%2B%7D%7D%20%2B%20v_%5Ctext%7Be%7D)
In other words, hydrogen nuclei in the core of the sun fuse together to form helium.