Mole Conversions

What is the molar mass of ZnCl₂?

(a)  

What is the molar mass of HgO?

(a)  

What is the molar mass of Cu(NO₃)₂?

(a)  

What is the molar mass of Al₂(SO₄)₃?

(a)  

Mercury (Hg) was previously used to measure body temperature! If a thermometer contained 2.25 grams of Mercury, how many moles is this?

• 2.25 moles

• 200.592 moles

• 0.0112 moles

• 1.36 x 10²⁴ moles

You use 2.2 x 10^-2 moles of sugar (C₆H₁₂O₆) to sweeten your coffee. How many grams of sugar is this?

• 3.96 grams

• 6.022 x 10²³ grams

• 180.156 grams

• 1.22 x 10^-4 grams

You put 5.512 x 10²¹ molecules of salt (NaCl) onto your avocado toast. How many moles did you use?

• 6.022 x 10²³ moles

• 0.00915 moles

• 3.32 x 10⁴⁵ moles

• 58.443 moles

If you have .00915 moles of NaCl, how many grams do you have?

• 6.022 x 10²³ grams

• 58.443 grams

• 0.535 grams

• 1.57 x 10^-4 grams

In a bottle of Hydrogen Peroxide (H₂O₂), there is 907.185 grams of H₂O₂. How many moles is this?

• 34.014 moles

• 30856.99 moles

• 0.0375 moles

• 6.022 x 10²³ moles

There are 0.0375 moles of H₂O₂ in a bottle. How many molecules of H₂O₂ are in this bottle?

• 34.014 molecules

• 6.022 x 10²³ molecules

• 6.227 x 10^-26 molecules

• 2.258 x 10²² molecules