Answer:
Electron shell.Each shell can contain only a fixed number of electrons, the first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
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Explanation:
Answer:
a salt
Explanation:
compounds are made of molecules but we need to mention the type of compound formed.
Answer:
B. because of its strong magnetic field
Explanation:
The Earth does not feel dangerous solar winds because of the Earth's atmospherical shape. It's magnetic field within the atmosphere dissolves the particles that can have a bad effect on Earth. If the Earth did not have it's magnetic field, a lot of Earth's grasslands would've been ruined by now.
B. Earth’s tilt
Earth’s tilt exposes different parts of the earth to varying degrees of sunlight throughout the year, causing seasons.
Answer:
percentage of water = 18.76%
Explanation:
A chemist has a sample of hydrated Li2SiF6 and it weighs 0.4813 grams.
The overall weight of the compound is 0.4813 grams.
weight of hydrated sample = 0.4813 grams.
weight of anhydrous compound = 0.391 grams
percentage weight of water = mass of water/mass of the hydrated compound × 100
mass of water = mass of hydrated compound - mass of anhydrous compound
mass of water = 0.4813 - 0.391 = 0.0903 grams.
percentage of water = 0.0903/0.4813 × 100
percentage of water = 9.03/0.4813
percentage of water = 18.761687097
percentage of water = 18.76%
