Phosphorus pentachloride decomposes according to the chemical equation PCI, (g) = PCI, (g) + Cl2(g)

Kc

= 1.80 at 250 °C

A 0.2371 mol sample of PCI; (g) is injected into an empty 2.70 L reaction vessel held at 250 °C.

Calculate the concentrations of PCI; (g) and PC1, (g) at equilibrium.

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons