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NYS Chemistry Regents Review Practice - Physical Behavior of Matter - Question 10 |
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Practice Questions
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10. To determine the density of an irregularly shaped object, a student immersed the object in 21.2 mL of water in a graduated cylinder, causing the level of the water to rise to 27.8 mL. If the object had a mass of 22.4 grams, what was the density of the object.
A) 27 g / mL
B) 3.4 g/ mL
C) 6 g / mL
D) 3.4 g / mL
Correct Answer: Option B - 3.4 g/ mL
Step 1:
D = M / V
First find the volume of the object = V = 27.8 - 21.2 = 6.6 mL
M = 22.4 g
Step 2: Substitute the values of M and V in the equation - D = M / V
D = 22.4 g / 6.6 mL = 3.4 g / mL
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