Molecular Mass

What is the molecular mass of ammonium nitrate, NH₄NO₃?

• 76

• 79

• 80

• 90

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

• Atomic mass

• Atomic number

• Oxidation number

• Valence electrons

Tags

NGSS.HS-PS1-7

What is the molecular mass of Hydrochloric Acid (HCl)?

• 18

• 34.5

• 36.5

• 35.1

Your teacher asks you to calculate the MOLECULAR mass of 2 NaBr. Which steps do you need to take in order to accomplish this task?

• Find the atomic mass of sodium on the periodic table.

• Find the atomic mass of Br on the periodic table.

• Multiply the atomic mass of each element by the coefficient.

• Add the atomic masses of 2 Na and 2 Br together.

Tags

NGSS.MS-PS1-1

If there is one molecule of N₂ the mass is ​ (a)   .

If there is one mole of N₂ the mass is ​ (b)   .

• 14.01 amu

• 14.01 g

• 28.02 amu

• 28.02 grams

Tags

NGSS.HS-PS1-7

What is the molar mass of Li₂O?

• 22.94 g/mol

• 29.88 g/mol

• 45.88 g/mol

• 38.94 g/mol

Tags

NGSS.HS-PS1-7

What is the molar mass of AuCl₃?

• 96 g

• 130 g

• 232.5 g

• 303.3 g

What is the molar mass of Al(NO₃)₃?

• 62.01 g/mol

• 88.99 g/mol

• 151.00 g/mol

• 213.01 g/mol

• 16 g/mol

• 18 g/mol

• 20 g/mol

• 22 g/mol

Tags

DOK Level 2: Skill/Concept

What is the molar mass of Mg(NO₃)₂

• 148.313g/mol

• 134.306g/mol

• 54.311g/mol