Akangaroo hopped 12meters directly toward a lake at a constant velocity. the kangaroo moved that distance in 7.5seconds. what was its velocity?

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

Hydrogen is the most abundant element on the periodic table..hope it .

The answer is b because a,c,and d are opinons