What is electronegativity?

a. a measurement of the ability of an atom to attract a proton

b. a measurement of the ability of an atom to attract a neutron

c. a measurement of the ability of an atom to attract an electron

d. a measurement of the ability of an electron to attract another electron

C - a measurement of the ability of an atom to attract an electron

the answer is C

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~lexy

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error