Answer:
I believe it is D
Explanation:
since Rutherford's explanation, when he made it in 1911, was that scattering was caused by a hard, dense court to centre of the Adam, which is the nucleus and he used Alpha particles to observe the scattered backwards from a gold foil
Answer:
Number3=Heat is absordedduring chemical reaction
Well, look up the atomic weights of copper and oxygen; add them appropriately; divide the total for the copper by the total for the molecule; then multiply by 100 to get it as a percentage.
Temperature can be calculated using the average kinetic energy. The ideal gas equation is being related to the average molecular kinetic energy.
<span>
PV = nRT
</span><span>PV = (2/3) N(0.5mv^2)
</span><span>
By substituting and simplifying, we eventually get the equation.
</span><span>
KE = (3/2)RT</span>
T = 3866 x 2 / 8.3145 x 3 = 309.98 K or 36.83 degrees Celsius
Answer:
B.Potential energy from inter-molecular forces
Explanation:
Molecules in both the liquid and gas phase exhibit vibrational, rotational and translational degrees of freedom i.e. they have kinetic energy of vibration, rotation and translation.
However, molecules in the gas phase move freely and quickly relative to the liquid phase. This is because in the liquid phase molecules experience stronger intermolecular forces of attraction which hold them closer and slow down their motion.
