Use the centimeter ruler and the gray object below to indicate how many certain and uncertain digits the length measurement should have.   Group of answer choices Number of certain digits = 3; Number of uncertain digits = 0 Number of certain digits = 3; Number of uncertain digits = 1 Number of certain digits = 2; Number of uncertain digits = 1 Number of certain digits = 2; Number of uncertain digits = 0

Change the following measurement to the appropriate SI unit. The final unit required is shown to the right of the answer box. Be sure to use correct significant figures. An automobile engine with a displacement of 4.16×102 in.3 =       cm3

Perform the following calculations: a) 14.86 ml + 15.0 ml + 14.980 ml = b) (42.927 g/ml)(9.00 ml) = Round off the answers to the proper significant figures.

Accurate? Precise? Density= Measurement, Significant Figures, Rounding, Precision and Accuracy 1. How many significant figures in each of the following measurements? 3.121 m 4 2 1.4 X 104g. 2 0.051 L 120 ft 2. Round the following numbers to 3 significant figures. 2.35500 23 9.385 9.59 2 Group A 12.348 g 12.441 g 12.367 g 12.392 g 3. Solve the following and express the answer in the correct number of significant figures. a. The average mass of 3 objects whose individual masses are 10.3 g, 9.334 g, 9.25 g. 10.39 + 9.334 + 9.25 +3= 28.8849, or 28.9 b. The volume of a metal block whose dimensions are 2.44 cm by 4.2 cm by 3.571 cm. 2.44 4.2.3.54= 36.60 Group B 12.412 g 12.420 g 12.418 g 12.415 g 0.0150 L 3 3 200. K c. Carry out the following operations and express your answer in the correct number of significant figures. (12.8+ 12.71)/0.560 = 45.55 155./(43.25-7.1) = 4,288 4. Four groups of students where charged with measuring the mass of 10.0 mL of a solution of sugar water and from there…

Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits. 9.677g-1.30g 3.877g-1.40g 11.500g+0.9g

Change the following measurement to the appropriate SI unit. The final unit required is shown to the right of the answer box. Be sure to use correct significant figures. An automobile engine with a displacement of 4.36×102 in.3 =  cm3   Change the following measurement to the appropriate SI unit. The final unit required is shown to the right of the answer box. Be sure to use correct significant figures. 221 lb man =  kg   Change the following measurement to the appropriate SI unit. The final unit required is shown to the right of the answer box. Be sure to use correct significant figures. 18643 ft elevation above sea level =  m

Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits. 19.770 g 0.9 g 6.50 g +1.500 g 6.50 g - 0.6 g = = 8 x10 X Undo

1. What is the length of the rod shown below? 3 4 7 10 2. If Student A measures the volume of a liquid and reports its volume as 23.50 mL and Student B measures a different amount of the same liquid and reports its volume as 15.0 mL, is it likely that the students used the same measuring device? Yes or no? Explain your answer. 3. If you were asked to measure 25.0 mL of a liquid and to transfer it to another container, which of the following glassware could you use? Choose all that apply. Give reason(s). a) A 50-mL buret with smallest divisions of 0.1 mL b) A 50 mL beaker with smallest divisions of 10 mL c) A 50-mL volumetric flask d) A 50-mL graduated cylinder with smallest divisions of 1 mL e) A 25-mL pipet 4. A group of five students attempted to estimate 100 g of a substance by balancing the amount of the substance with a 100-g standard mass and obtained the following masses after each estimated amount was weighed: 95.8634 g, 80.8125 g, 106.5078 98.2865 and 86.4453 Create a data…

In the summer, the outdoor temperature in the Northeast might be 84°F. What is this temperature on the Celsius and Kelvin scales? Temperature = Temperature °C K

Perform the following calculation and round answer to the correct number of significant figures? (2.17cmx3.22cm)+1.8cm. 9.00cm 8.8cm 9cm 8.79cm