The reaction of magnesium with oxygen is represented below.
2 mg (s) + o2(g) –> 2 mgo (s)
which best explains why increasing the amount of reactants increases the rate of the reaction?
a. the kinetic energy of the molecules increases because there is more mass in the system.
b.
the frequency of collisions increases because there are more molecules in a given
volume.
c.
the activation energy is lowered because oxygen gas is more reactive at high
concentrations.
d.
there is more space for molecular interactions because the system must expand to
accomodate more reactants.

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Is ice cream a mechanical mixture or solution why?