Ino Quiz

What is the amount unit similar to familiar units like pair, dozen, and gross?

• Mole

• Kilogram

• Gram

• Liter

What is the fundamental constant known as Avogadro’s number?

• 6.022 x 10^23

• 3.14159

• 9.81

• 2.718

What is the mass percentage of iron in the compound Fe2O3?

• 70%

• 80%

• 75%

• 55%

What is the molarity of a solution containing 0.133 mol of sucrose in a 355 mL sample?

• 0.250 M

• 0.133 M

• 0.375 M

• 0.500 M

What is the empirical formula of a compound if a sample contains 0.130 g of nitrogen and 0.370 g of oxygen?

• NH2

• N2O5

• NO

• NO2

What is the final concentration of a LiCl solution after diluting 175 mL of a 1.6 M solution to a final volume of 1.0 L?

• 0.28 M

• 0.32 M

• 0.45 M

• 0.40 M

What is the percentage weight by volume (w/v) of a solution if 10.65 mL of methanol is mixed in 1.5 L of solution?

• 0.71%

• 0.75%

• 0.80%

• 0.85%

What is the volume percentage of ethanol in a 200 mL solution that contains 36 mL of ethanol?

• 20%

• 15%

• 12%

• 18%

What is the molecular formula of a compound with the empirical formula CH2O and a molecular mass of 180 amu?

• C2H4O2

• C3H6O3

• C4H8O4

• C6H12O6

What is the mass percentage of glucose in a 5.0-g sample of spinal fluid containing 3.75 mg of glucose?

• 0.225%

• 0.300%

• 0.075%

• 0.150%