Answer:
Na₂O is the formula for the ionic compound "sodium oxide".
It has 2 sodium atoms and 1 oxygen atom.
The number of atoms for an element are written as a subscript after the element. "1" subscripts are not written.
The names of the elements are found on the periodic table.
Answer:
Elliptical galaxies are one of the three types of galaxies. They have a rounded shape of an ellipse, like a stretched-out circle. They lack the swirling arms that are a main feature of spiral galaxies.
Cause the Stars Compose the dark matter and so is the Gas and inside of it,it's the Dust
Explanation:
Relative dating is used in determining a fossils approximate age comparing it with similar rocks and fossils whose age are known or formation of sedimentary rock . Whereas absolute dating is used in to determining the exact age of fossil by determining radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated to it.
If you’re asking if this is true or false, it is false . A HOMOGENEOUS mixture is one the where the substances are evenly distributed and have a uniform composition, while a HETEROGENEOUS mixture is uneven and the substances are part from each like oil and water.
