Four separate experiments were performed to compare the friction of different objects with gravity. One experiment used an ice cube. Another experiment used a rock. The third used an eraser, and the last used a wood block. Each object is placed at
one end of a plastic tray. The end of the tray is lifted slowly. A metric ruler is used to measure the height of the raised end of
the tray at which each object begins to slide.
Identify one similarity between the four experiments

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

you gotta add the following molecules so we can give u an answer

explanation:

the complete reaction for the formation of aluminum oxide is as follows;

4al + 3 > 2

so if the molar mass of the is 32.0 g/mol and

so, to form 3.80 mol of

(3.80 mol ) x (3 mol ) x (32.0 g )

dividing by 2 because two moles of will be formed;

∴ 364.8/2   = 182.4g