Answer:
it is 8
Explanation:
The number of atoms of each element present in one unit of ammonium carbonate is found by multiplying each element in parenthesis by two. Thus, the total number of nitrogen atoms is 2, hydrogen is 8, carbon is 1, and oxygen is 3 in one unit of (NH4)2CO3 ( N H 4 ) 2 C O 3 .
1.) In 4 Copper atoms, you will have 116 electrons.
2.) You can make 3 Copper atoms out of 87 protons.
A star’s spectrum will change over time due to it being dependent on some properties in the photosphere such as :
<h3>What is a Star?</h3>
This refers to an astronomical object composed of hydrogen and helium and held together by gravity. As stars age or get older, changes occur but are very slow.
This is why most stars spend their lifetime in the main sequence but does't invalidate that they won't remain constant as their constituents also become used up with time.
This is therefore the reason why star’s spectrum will change over time as the most appropriate choice.
Read more about Star here brainly.com/question/2193636
#SPJ1
Answer:
Actually, the Sun only rises due east and sets due west on 2 days of the year the spring and fall equinoxes! On other days, the Sun rises either north or south of "due east" and sets north or south of "due west." ... At the fall equinox, the Sun rises due east and sets due west.
Explanation:
Sunrise and Sunset - Stanford Solar Center
Ionic bonds is formed between a metal and a nonmetal because the metal transfers it's valence electrons to the nonmetal. Electrons doesn't transfer between two nonmetal because both are negatively charged.