1.Which of the following represent three measurements that are the most precise?
ID: 488963 • Letter: 1
Question
1.Which of the following represent three measurements that are the most precise?
A. 1.35, 1.20, and 1.28
B.1.02, 0.82, and 1.87
C.1.11, 1.93, and 1.90
D.1.20, 1.22, and 1.19
2. If a sample has a mass of 2.370 g, which of the following other readings is the most accurate?
A. 2.330 g
B. 2.368g
C.2.450g
D.2.378g
3.
A. 51.4g/mL
B. 1.15g/ML
C.3.6g/mL
D.0.869g/mL
4.
A. 3
B.4
C. 5
D it cannot be determine
2. If a sample has a mass of 2.370 g, which of the following other readings is the most accurate?
A. 2.330 g
B. 2.368g
C.2.450g
D.2.378g
3.
What is the density of a material with a mass of 23.9 g and a volume of 27.5 mL?A. 51.4g/mL
B. 1.15g/ML
C.3.6g/mL
D.0.869g/mL
4.
How many significant figures does the number 23.120 have?A. 3
B.4
C. 5
D it cannot be determine
Explanation / Answer
1.D.1.20, 1.22, and 1.19
2. B. 2.368g
3. density = mass/volume in ml
= 23.9/27.5 = 0.869g/ml
4. c. 5
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