Molar Quantities

There are __?__ significant digits in the number 0.00076

• 2
• 4
• 5
• 6

Why is the zero significant in the digit 706?

• It is an ending zero after the decimal point.
• It is a beginning zero.
• It is between 2 significant digits.
• It is not a significant digit.

Which of the following is the answer for the problem with the correct number of significant digits?

165815 ÷ 230 = 720.93478

• 721

• 720

• 700

• 7

What type of particle is:  Ag

• Atom
• Molecule
• Formula Unit
• Ion

Tags

NGSS.HS-PS1-1

What type of particle is:  KCl

• Atom
• Molecule
• Formula Unit
• Ion

What type of particle is: NO₂

• Atom
• Molecule
• Formula Unit
• Ion

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

Tags

NGSS.HS-PS1-7

A mole of potassium chloride contains 6.02 x 10²³ _____.

• atoms
• formula units
• ions
• molecules

Tags

NGSS.HS-PS1-7

A mole of carbon dioxide contains 6.02 x 10²³ _____.

• atoms
• formula units
• ions
• molecules

The number 6.02 x 10²³, which is the number of particles found in a mole is called ....

• molar mass
• mole
• Avogadro's number
• hydrate

Tags

NGSS.HS-PS1-7