The element calcium has a total of four energy levels<span> that each can hold a certain number of electrons. Its first and fourth energy levels hold two electrons each, and its second and third energy levels hold eight electrons each.</span>
Answer:
The volume at STP of 0,765 moles of carbon monoxide gas is 17, 125 L.
Explanation:
We use the ideal gas formula, with the constant R = 0.082 l atm / K mol. The STP conditions are : 1 atm pressure and 273 K temperature. Solve for the formula, V (volume):
PV=nRT ---> V= (nRT)/P
V= (0,765 mol x0,082 l atm/ K mol x 273 K)/ 1 atm
<em>V= 17, 12529 L</em>
Answer: option (A)
Explanation: The convection current is generates in the mantle due to the heat radiated from the core of the earth. Due to this convection current, the lithospheric plates moves as the upper part of the mantle known as the asthenosphere, is the region which is viscous in nature and drives the plates to move. This is a repeating cycle that constantly forces the plates to move.
Thus the correct answer is option (A).
Answer:
*Snif*Snif*UnU so powerful
Explanation:
