Concentration and Atomic Mass Concepts

The video tutorial explains how to convert the concentration of sodium hydroxide from moles per decimeter cubed to grams per decimeter cubed. It begins by introducing the concept of conversion and the properties of sodium hydroxide. The tutorial then provides the equation needed for conversion and demonstrates how to calculate the relative formula mass of sodium hydroxide. Finally, it performs the conversion calculation, showing that 6 moles per decimeter cubed is equivalent to 240 grams per decimeter cubed.

What is the main chemical compound discussed in the video for conversion?

• Calcium Carbonate

• Sodium Hydroxide

• Potassium Hydroxide

• Sodium Chloride

What is the concentration of sodium hydroxide mentioned on the label?

• 6 moles per decimeter cubed

• 7 moles per decimeter cubed

• 5 moles per decimeter cubed

• 4 moles per decimeter cubed

Which formula is used to convert moles per decimeter cubed to grams per decimeter cubed?

• Divide by the atomic number

• Divide by the relative formula mass

• Multiply by the relative formula mass

• Multiply by the atomic number

What is the relative atomic mass of sodium?

• 40

• 16

• 18

• 23

What is the relative atomic mass of oxygen?

• 8

• 16

• 18

• 23

What is the relative atomic mass of hydrogen?

• 1

• 2

• 3

• 4

What is the relative formula mass of sodium hydroxide?

• 40

• 18

• 23

• 16

How do you convert grams per decimeter cubed back to moles per decimeter cubed?

• Multiply by the atomic number

• Divide by the atomic number

• Multiply by the relative formula mass

• Divide by the relative formula mass

What is the final concentration of sodium hydroxide in grams per decimeter cubed?

• 180 grams per decimeter cubed

• 300 grams per decimeter cubed

• 240 grams per decimeter cubed

• 120 grams per decimeter cubed

If you dissolve 240 grams of sodium hydroxide in a liter of water, what is the resulting concentration in moles per decimeter cubed?

• 5 moles per decimeter cubed

• 4 moles per decimeter cubed

• 6 moles per decimeter cubed

• 7 moles per decimeter cubed