In a laboratory experiment, the density of a concentrated sugar solution was determined by measuring the volume of the solution and corresponding mass. Three
students each made a set of measurements using a different balance and used the
results to calculate density. Their results are summarized here.
What is the average deviation for set 2?
Density (g/mL)
Set 1 Set 2 Set 3
Trial
a
1.380 1.347 1.418
b
1.400 1.479 1.499
С
1.374 1.416 1.301

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).