A latch on a desk drawer has two magnets designed to attract each other and keep the door shut. However, the magnets repel each other on your desk. Can this be fixed? If so, how?
A) It cannot be fixed in any way.
B) It can be fixed by turning both magnets around.
C) It can be fixed by removing one of the magnets.
D) It can be fixed by turning one of the magnets around.

Select the atomic models that belong to the same element

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?

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.