Answer: Planet A: 76% Nitrogen, 23% Oxygen, 1% Other
Explanation: Hope this helps!
Answer:
And since there is a frictional force acting upon the rotating blades of the fan due to the air, the speed of the fan blades ceases and ultimately comes to halt. Thus here, air friction is the external force which makes the fan blades to stop after sometime, otherwise it would have never stopped rotating :P.
Explanation:
Answer:
The molarity is 6, 25M
Explanation:
A solution molar---> moles of solute ( in this case, magnesium oxide) in 1 L of solution :
0,8L solution-----5 moles solute
1 L solution----x=(1 L solutionx 5 moles solute)/0,8L solution= 6,25 moles solute---> 6,25M
Answer:
219.1K
Explanation:
T1/V1= T2/V2
Temp for Gas Laws are always in Kelvin
Volume is always Liters
so T2= (T1xV2)/V1
(35Lx313K)/50L=219.1K
A, energy stored in chemical bonds of molecules, is correct because chemical energy is the potential energy in the molecule, for example the chemical energy in coal is converted to electrical energy through power plants. The energy was already stored in the coal, just in a different form.