2. Explique El agua superficial se encuentra en lagos, ríos, pantanos, marismas, la atmósfera y la tierra cubierta de hielo y nieve. ¿Por qué la gente no siempre puede utilizar el agua de todas estas fuentes?

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction