Question

Complete the last two columns of the table. The molar masses of the substances are given parentheses. Use the space below to show your work. in

Quantity

Number of moles

Number of

Particles

Atoms is 14.0 g of neon, Ne (20.18 g/mol) Formula units in 14.0 g of sodium bromide, NaBr

b.

(102.89 g/mol)

Molecules in 14.0 g of oxygen, O, (32.00 g/mol)

Answer 1

Step-by-step explanation:

See the attached worksheet.

Moles of a substance may be determined by dividing the grams of that substance by its molar mass.

In the table, each mole calculation is (grams)/(molar mass) of that substance.

To find the number of particles, Avogadro's number is needed. One mole means 6.022x10^23 particles, written as 6.022E+23 on the spreadsheet. Particles is the number of moles times this number, as shown in the last column.