Moles, Molecules and Mass

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²⁴
• 146
• 4.15
• 1.5x10²⁴

How many grams are in 3.3 mol of Potassium Sulfide?

• 360 g

• 450 g

• 363 g

• 454 g

Tags

NGSS.HS-PS1-7

How many molecules of sugar (C₆H₁₂O₆) are in one mole?

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

How many particles are in 13.5 grams of Beryllium?

• 1.5 particles
• 9 particles
• 4.01x10²³ particles
• 9.03x10²³ particles

Calculate the number of atoms in 0.0340 g Zn.

• 5.200 x 10^-4 atoms Zn
• 3.130 x 10²³ atoms Zn
• 3.130 x 10²⁰ atoms Zn
• 1 atom Zn

Tags

NGSS.HS-PS1-7

What type of particle is:  Ag

• Atom
• Molecule
• Formula Unit
• Ion

Tags

NGSS.HS-PS1-1

What type of particle is: NO₂

• Atom
• Molecule
• Formula Unit
• Ion

Tags

NGSS.MS-PS1-1

What type of particle is: Br₂

• Atom
• Molecule
• Formula Unit
• Ion

Tags

NGSS.MS-PS1-1

What is the mass of 1.2 x 10²⁴ atoms of C?

• 23.9 grams
• 24 grams
• 6.02 grams
• 1.2 grams

Tags

NGSS.HS-PS1-7

What is the mass of 3.01 x 10²² atoms of magnesium?

• 1.22 grams

• 1.3 grams

• 1.2 grams

• 1.22x10⁴⁶ grams