Six students were asked to perform an experiment to see how the mass of a pendulum affected its period. they were given supplies and asked to design an experiment to test the impact that the mass of the bob had on period. what would likely make their results more reliable?

a) if each student was given different equipment.
b) if a set procedure was followed by all of the students.
c) if each student was given the same hypothesis to prove.
d) if the student all perform the investigation on the same day.

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