Answer:
The answer is covalent bond
Explanation:
when oxygen atom and two hydrogen atoms are combined, water molecule is formed according to the equation;
2H2 + O2 ==> 2H2O
Water is a covalent compound.
A covalent bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
For many molecules, the sharing of electrons allows each atom to attain the equivalent of a full outer shell, corresponding to a stable electronic configuration.
Answer:
Because the water is filled up with the sand every where
Explanation:
So the exess sand goes to the bottem
The answer is C, it’s a pattern that we can see and use on all right triangles.
Answer:
2.1 x 10¹²ng
Explanation:
Mass of the calcium carbonate given is:
2.1kg
We need to take this mass to nanogram, ng.
Since :
1000g = 1kg
10⁹g = 1ng
So;
1kg = 1000 x 10⁹ = 10¹²ng
So;
2.1kg will give;
Since
1kg gives 10¹²ng
2.1kg will give 2.1 x 10¹²ng
Answer:
Name: Magnesium
Atomic Number: 12
Atomic Mass: 24.305 atomic mass units
Number of Protons: 12
Number of Neutrons: 12
