How is stoichiometry used to calculate the mass of a substance?
o
a. unit conversion factors are used to convert between units of
grams and moles.
o
b. oxidation numbers are used to convert from moles of one
molecule to moles of another molecule.
o
c. subscripts in chemical formulas are used to calculate amounts of
substances.
o
d. percent contributions are used to convert between molar mass
and mass.
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A. Unit conversion factors are used to convert between units of

grams and moles.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .