Metric / Unit Conversions and Density

Convert 284.4 nm to centimeters

• 2.844 cm
• 28440 cm
• 2.844 x 10^-5 cm
• 2.844 x 10^-9  cm

Convert 35.23 meters to millimeters

• 35230 mm
• 3525 mm
• 352300 mm
• 352.3 mm

Convert 809 ounces to kilograms

• 22.9 kg
• 28.5 kg
• 22900 kg
• 35.0 kg

The density of a diamond is 3.51 g/cm³. What is the volume of a 6.0 carat diamond if 1 carat = 0.200 g?

• 21 cm³
• 1.7 cm³
• 105 cm³
• 0.34 cm³

A mole of helium gas contains 6.022 x 10²³ helium atoms. How many atoms are there in 5.15 x 10^-6 moles of helium?

• 6.02 x 10²³ atoms
• 9.15 x10^-30 atoms
• 3.10 x 10¹⁸ atoms
• 5620 atoms

Using the graph, identify the metal given the following:

D_Aluminum = 2.70g/cm³

D_Lead = 11.3 g/cm³

D_Nickel = 8.90 g/cm³

D_Iron = 7.86 g/cm³

• Aluminum

• Lead

• Nickel

• Iron

Put the liquids in order from most dense to least dense?

• 4, 3, 2, 1
• 1, 2, 3, 4
• 3, 4, 2, 1, 
• 4, 3, 1, 2

If the density of a bar of gold is 19.3 g/cm³and you cut it into 4 pieces,  what is the density of each piece of gold?  

• 4.825 g/cm³
• 9.65 g/cm³
• 19.3 g/cm³
• 38.6 g/cm³

If an object has a density of 3.6 g/mL and you put it into water, will it sink or float?  

• sink
• float

Which box has a higher density?  

• Box A
• Box B
• cannot be determined
• they are the same