Which statement identifies why oxygen is classified as a pure substance and air is classified as a mixture Oxygen goes under a phase change, whereas air is always a gas

Oxygen has a higher density than air

Oxygen contains only one substance but air contains several substances

Oxygen is more reactive than air

Draw metallic bonding if two copper

Consider the reaction of a(g) + b(g) + c(g) => d(g) for which the following data were obtained: experiment initial [a], mol/l initial [b], mol/l initial [c], mol/l initial rate, mol/l.s 1 0.0500 0.0500 0.0100 6.25 x 10^-3 2 0.100 0.0500 0.0100 2.50 x 10^-2 3 0.100 0.100 0.0100 1.00 x 10^-1 4 0.0500 0.0500 0.0200 6.25 x 10^-3 what is the rate law for the reaction?

Table sugar completely dissolved in water is an example of a?