Mole Calculation

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g

• 19.4 g

• 673 g

• 389 g

How many moles are in 19.82 g Mg? 

• 1.226mol Mg

• 481.7mol Mg

• 1.000mol Mg

•  0.8156 mol Mg

How many atoms are present in a 13.5 gram sample of beryllium?

• 1.5 particles

• 9 particles

• 4.03 x10²³ particles

• 9.02 x10²³ particles

A sample of silver contains 5.71 x 10²² atoms. How many moles of silver are present?

• 3.43 x 10⁴⁶ moles

• 0.0529 moles

• 0.0948 moles

• 10.5 moles

How many atoms are present in a 0.0254 mole sample of gold?

• 0.25 atoms

• 1.528 x 10²² atoms

• 4.22 x 10^-25 atoms

• 5 atoms

Which of the following shows the correct setup to determine the number of moles of molecules in a 12.0 gram sample of Cl₂?

• 12/35.5 mole

• 12/71 mole

• 12 moles

• 12 x 35.5 moles

Determine the mass of 2.40 moles of C₆H₁₂

• 201 g

• 115 g

• 230. g

• 353 g

Tags

NGSS.HS-PS1-7

How many molecules are present in a 135 g sample of Teflon, which has a formula of C₂F₄?

• 6.13 x 10²³ molecules

• 5.13 x 10²³ molecules

• 8.13 x 10 ²³ molecules

• 9.13 x 10²³ molecules

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Which of the following would have more mass?

• mole of Li

• mole of Au

• mole of Si

• None, all are equal

How many particles are in 13.5 grams of Beryllium?

• 5 particles

• 9 particles

• 4x10²³ particles

• 9x10²³ particles