Review Quiz Mole Concept

Which of the following is the molar mass of 1

mole of water (H2O)? (Note: The atomic mass of

hydrogen is 1g and for oxygen is 16 g)

• 26 g/mol

• 18 g/mol

• 17 g/mol

• 10 g/mol

Tags

NGSS.MS-PS1-1

Chlorophyll (C55H72MgN4O5) is a green pigment found in the plants which is essential in the photosynthesis. It is made up of 5 elements, namely, carbon, hydrogen, magnesium, nitrogen, and oxygen. How many atoms of oxygen are there in one molecule of this compound?

• 1

• 5

• 55

• 72

Tags

NGSS.MS-PS1-1

Which statement is NOT true?

• One mole of a substance contains a fixed number of particles.

• One mole of different substances has different masses and number of particles.

• One mole of different substances has the same number of particles but they have different masses.

• The formula weight of the compound is equal to one mole of that substance.

Tags

NGSS.MS-PS1-5

The following groups are basic unit of counting, except one. Which one is not?

• dozen, mole, pairs

• mole, reams, case

• mole, meter stick, box

• pairs, case, mole

Which of the following correctly described a mole?

• Mole is a basic unit of counting number of tiny representative particles of matter.

• Mole is a way of counting the individual tiny representative particles of matter.

• Mole is a way of determining the type of representative particles exist in a given sample of matter.

• Mole is a unit of counting of any tiny object or things such as bacteria that could be seen only in the aid of microscope.

Tags

NGSS.HS-PS1-7