2023 Chemistry Fall Semester Test

Calculate the molar mass of ammonium phosphate (NH4)3PO4

• 149.0 g/mol
• 242.0 g/mol
• 113.0 g/mol
• 121.0 g/mol

What is the molar mass of H2O

• 3
• 10
• 18

Based on the Law of Conservation of Mass, if I have 30 g + 10 g on one side of the equation then I need ____ g on the other side.

• 10 g
• 20 g
• 30 g
• 40 g

How many hydrogen atoms are in six molecules of ethylene glycol, HOCH2CH2OH?

• 6
• 36
• 6 X 6.02 X 10^23
• 36 X 6.02 X 10^23

90 cg = ________ dg

• 900
• 9
• .9
• .09

2.36 cm = ______ mm

• 23.6
• 236
• .236
• .0236

What does mm stand for?

• mickey mouse
• micrometer
• millimeter
• meter

What does cg stand for?

• centigram
• candygram
• centimeter
• none of the above

What type of element is Barium?

• Alkali Metal
• Alkaline Earth Metal
• Transition Metal
• Halogen

What type of element is Krypton?

• Chalogen
• Halogen
• Noble gas
• Transition Metal