Chemistry (Mixed)

What are the units for molar mass?

• g

• amu

• g mol^-1

• L

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

How many grams are in 1.2 x 10²⁴ molecules of CO? (molar mass of CO = 28 g/mol)

• 28.2 g

• 55.8 g

• 6.02 g

• 1.2 g

How many atoms of carbon are in 6.00 g of carbon?

• 1.20x10²⁴ atoms C

• 6.02x10²³ atoms C

• 3.01x10²³ atoms C

• 1.50x10²³ atoms C

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

State of Matter?

• Liquid

• Gas

• Solid

• Plasma

If oxidation is occuring what happens to the metal

• Resting

• It's making a new substance

• It's dissolving

• Rusting

What is the State of Matter ?

• Liquid

• Solid

• Gas

• Solution

Which element in Period 2 has the greatest atomic radius?

• Be

• C

• Na

• Li

Of the halogens (group 7A), which has the smallest radius?

• F

• Br

• He

• At