How do you determine the significant figures accuracy of a quantity listed in a reference source?
a) A is a quantity with two significant figures. B has 4 significant figures. If C = A + B, D = A*B, and E=B/A What should the number of significant figures of C, D and E be? b) Compare and contrast the following pairs of definitions, one set at a time. For each set of definitions, describe what kind of measurements ( time, positions etc) must you do in order to compute the quantity based on their definitions. Be as...
A clear and objective stance on the relationship between significant figures, accuracy, and precision with a relevant example.
How many significant figures are in the following quantity: 0.00654 s a. 1 b. 2 c. 3 d. 4
What factors govern the accuracy of your density measurement? Hint: think about how you measure mass and volume. Which measurement is likely to determine the number of significant figures used in your answer? Explain
DO ALL PARTS OF THE QUESTION AND USE SIGNIFICANT FIGURES!!! IF YOU DO NOT DO THIS I WILL DOWNVOTE YOU!!!! QUESTION 9 2 points Save Answer A 30.0 g piece of aluminum (C = 0.897 J/g °C) initially at 94.6 °C is placed in 100.0 g of water initially at 18.2 °C. The system adjusts until the temperature of the aluminum and the water are the same. What is the final temperature?
Chem 1151 Express the quantity in moles to three significant figures. OType here to
DO ALL PARTS OF THE QUESTION AND USE SIGNIFICANT FIGURES!!! IF YOU DO NOT DO THIS I WILL DOWNVOTE YOU!!!! QUESTION 1 Save Answer Calculate the density of freon -12 (CF2Cl2) at 26.3 °C and 0.695 atm. density = _ g/L QUESTION 2 Save Answer What volume of O2 (at 0.916 atm and 20.3 °C) is produced by the decomposition of 4.52 kg of Hgo? 2 HgO(s) --> 2 Hg(1) + O2(g) V= __L
Global positioning satellites (GPS) can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of several satellites orbiting Earth. If one of the satellites is at a distance of 20,000 km from you, what percent accuracy in the distance is required if we desire a 2-meter uncertainty? Express your answer using one significant figure. How many significant figures are needed in the distance? Express your answer as an integer.
A coyote can locate a sound source with good accuracy by comparing the arrival times of a sound wave at its two ears. Suppose a coyote is listening to a bird whistling at 1000 Hz . The bird is 2.5 m away, directly in front of the coyote’s right ear. The coyote’s ears are 15 cm apart. Part A) What is the difference in the arrival time of the sound at the left ear and the right ear? Hint: You...
DO ALL PARTS OF THE QUESTION AND USE SIGNIFICANT FIGURES!!! IF YOU DO NOT DO THIS I WILL DOWNVOTE YOU!!!! QUESTION 7 Save Answer A 437.2 g sample of an unknown substance requires 8460 J to increase its temperature from 19.3 °C to 68.9 °C. The specific heat of the substance is __J/g °C. QUESTION 8 0.5 points Save Answer A 437.2 g sample of an unknown substance requires 8460 J to increase its temperature from 19.3 °C to 68.9...