Relative Mass

What is the relative atomic mass (A_r) of Carbon?

• 6

• 12

• 18

• 7

What is the relative atomic mass (A_r) of Chlorine (Cl)?

• 35.5

• 17

• 18.5

• 0.5

The relative molecular mass of a compound is equal to the sum of its

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

What is the relative atomic mass of sodium?

• 11
• 23
• 46
• 64

What is the relative molecular mass of fluorine gas, F₂?

• 19
• 38
• 9
• 18

Find Molecular Mass: Calculate the mass of one mole of CO₂ (carbon dioxide).

• 18.0 grams

• 44.0 grams

• 14.0 grams

• 180.0 grams

The periodic table displays the mass of how many moles of each element?

• 1 mole

• 2 moles

• 8 moles

• it does not tell you the mass of elements

calculate the relative atomic mass for Ammonium nitrate

• 80.0

• 79

• 60

• 65

The relative atomic mass is the average mass of an atom compared to 

• the mass of a carbon-12 atom.
• 1/12 the mass of a carbon-12 atom
• the mass of a hydrogen atom
• 1/12 the mass of a hydrogen atom

The atomic mass number of a specific element is determined by the:

• number of protons in its nucleus

• number of neutrons plus protons in its nucleus

• number of neutrons plus electrons in its nucleus

• number of electrons in its outermost shell

• total number of neutrons orbiting the nucleus