Answer:
Explanation:
The major regulation, regulatory, and communicating system in the body is the nervous system. It is the foundation of all mental operation, including thinking, learning, and memory. The nervous system, along with the endocrine system, is responsible for controlling and sustaining homeostasis.
Answer:
Explanation:
Distance is the product of speed and time.
The speed is 8 kilometers per hour and the time is 4 hours.
Substitute the values into the formula and multiply. Note that the hours will cancel when multiplied.
Mr. Evans traveled <u>32 kilometers.</u>
In the first chart (NH4)2SO4
Nitrogen is 2
Hydrogen is 8 (h4*2)
Sulfur is 1
Oxygen is 4
For the second chart
Nitrogen i believe is 2
Hydrogen would be 10
Sulfur would should 1
and Oxygen should be 4
Answer:That all noble gases will have 8 valence electrons which makes a atom stable
Explanation:
Answer:
(1) The outermost shell should have Eight electrons to complete or called as octet and attain stability.
(2) Hydrogen and Chlorine share Electrons with each other and form Covalent bonding.
(3) Hydrogen forms an octet by obtaining an electron, and Helium is the only element that has an octet with two electrons.
(4) The octet rule states that an atom should attain eight electrons in the outermost shell to get stability, However we have exceptional like Hydrogen and helium.
(5) In Ionic bond there is a formation of Ions of the elements in a compound, like in NaCl there will be Na+ and Cl-.
(6) While in Covalent bond there is sharing of electron between the atoms included like O2.
(7) In ionic bond there is an electrostatic force of attraction while in Covalent bond the is a mutual sharing of electrons.