A. Fewer valence electrons
Valence electrons are electrons that are held most loosely in the outermost shell.
To my best knowledge I believe the answer is electrons are distributed around the nucleus and occupy almost all the volume of the atom.
Answer:
The moon's surface has been struck with other objects.
Explanation:
Answer 1 - Craters are not a sign of alien life as there is nothing directly showing the crater's are not natural phenomena.
Answer 2 - Craters are (normally) produced by the impact force of a foreign object that is moving quickly and collides with an object of larger size.
Answer 3 - Volcanos form mountains and magma tubes, not craters.
Answer 4 - The formation of mountains does not relate to craters in any meaningful way.
Answer:
313 K;
Liquid state.
Explanation:
When the systems are put in contact they intend to achieve thermal equilibrium, it means that they will change heat until they both have the same final temperature (T). If the system is isolated, by the energy equilibrium, the total heat change must be 0. Thus, the water vapor (hotter) loses heat to the liquid water.
Qv + Ql = 0
The heat is the heat capacity at constant pressure (Cp) multiplied by the mass and by the change in temperature (final - initial). Looking at a thermodynamics table, the values of Cp at 298K for water vapor and liquid are:
Cpv = 0.480 cal/g.K
Cpw = 1.000 cal/g.K
Cpv*mv*(T - 373) + Cpw*mw*(T - 310) = 0
0.480*32.0*(T-373) = -1.000*295*(T-310)
15.36*(T - 373) = -295*(T-310)
15.36T - 5729.28 = -295T + 91450
310.32T = 97179.28
T = 313 K
Knowing that the fusion temperature of the water is 273 K and the boiling point is at 373 K, the system at 313 K is ar the liquid state.
