How many moles of PbNO3 are there in 4.5 g of PbNO3?

0.017 moles PbNO₃

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 4.5 g PbNO₃

[Solve] moles PbNO₃

Step 2: Identify Conversions

[PT] Molar Mass of Pb - 207.2 g/mol

[PT] Molar Mass of N - 14.01 g/mol

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of PbNO₃ - 207.2 + 14.01 + 3(16.00) = 269.21 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

0.016716 moles PbNO₃ ≈ 0.017 moles PbNO₃

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.