Mol conversions - molar mass & Avogadro HW3

5.11 x 10²³ atoms of lithium (Li) is equal to how many moles?

• 1.18 moles

• 0.351 moles

• 1.34 moles

• 0.849 moles

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NGSS.HS-PS1-7

0.750 mole of copper (Cu) is equal to how many atoms?

• 8.03 x 10²³ atoms

• 6.02 x 10²³ atoms

• 4.51 x 10²³ atoms

• 3.11 x 10²³ atoms

0.50 moles of carbon (C) is equal to how many grams?

• 6.0 grams

• 12 grams

• 8.0 grams

• 14 grams

36.0 g of beryllium (Be) contains how many moles?

• 0.250 mol

• 4.00 mol

• 45.0 mol

• 320. mol

How many atoms would be contained in 454 grams of iron (Fe)?

• 6.02 x 10²³ atoms

• 8.14 atoms

• 4.90 x 10²⁴ atoms

• 55.85 x 10²³ atoms

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NGSS.HS-PS1-7

Find the mass in grams of 2.25 x 10²⁴ atoms of calcium (Ca).

• 40.0 grams

• 255.1 grams

• 150. grams

• 9.02 x 10²⁴ grams

Which of the following represent an atom containing 9 protons, 10 neutrons, and 6 electrons?

• 
• 
• 
• 

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NGSS.HS-PS1-1

An Aluminium-28 isotope contains the following:

• 15 Protons, 12 Electrons, 12 Neutrons

• 15 Protons, 12 Electrons, 12 Neutrons

• 13 Protons, 13 Electrons, 15 Neutrons

• 13 Protons, 13 Electrons, 16 Neutrons

Tags

NGSS.HS-PS1-8