Avogadro's Number and Molar Mass

How many water molecules are in 5.2 moles of water?

• 6.0 x 10²³ molecules

• 5.2 molecules

• 3.1 x 10²⁴ molecules

• 8.6 x 10^-24 molecules

What is the mass of 0.89 mol of CaCl₂?

• 111 grams
• 0.008 grams
• 98.9 grams
• none of the choices

If you were converting from moles Z to grams Z, which conversion factor would you use?

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Tags

NGSS.HS-PS1-7

If you were converting from grams Z to moles Z, which conversion factor would you use?

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How many molecules of diphosphorus pentachloride are in exactly 1 mole of P₂Cl₅?

• 2 atoms

• 5 atoms

• 2 moles

• 5 moles

• 6.022 x 10²³ molecules

How many atoms of phosphorus are in exactly 1 molecule of P₂Cl₅

• 2 atoms

• 5 atoms

• 2 moles

• 5 moles

• 6.022 x 10²³ molecules

Tags

NGSS.MS-PS1-1

Which type of particles are used for covalent (molecular) compounds?

• atoms

• molecules

• formula units

Tags

NGSS.MS-PS1-1

Which type of particles are used for ionic compounds?

• atoms

• molecules

• formula units

Which type of particles are used for elements?

• atoms

• molecules

• formula units

How many calcium ions are in 11 formula units of calcium phosphate, Ca₃(PO₄)₂?

Number only. No Units.

(a)