The amount of heat needed to melt one mole of a solid at a constant temperature is called .

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Which metals are called noble metals