Procedure Part 1: Length Measurements 1 Gather the metric ruler, CD or DVD, key, spoon, and fork. 2 Look at the calibration marks on your ruler to determine the degree of uncertainty and number of significant figures that can be made when measuring objects with the ruler. decimal place Remember to do this any time you use this ruler

Procedure Part 1: Length Measurements 1 Gather the metric ruler, CD or DVD, key, spoon, and fork. 2 Look at the calibration marks on your ruler to determine the degree of uncertainty and number of significant figures that can be made when measuring objects with the ruler. decimal place Remember to do this any time you use this ruler

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter3: Measurement And Chemical Calculations

Section: Chapter Questions

Problem 4CLE

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You and your lab partner are asked to determine the density of an aluminum bar. The mass is known accurately (to four significant figures). You use a simple metric ruler to measure its dimensions and obtain the results for Method A. Your partner uses a precision micrometer and obtains the results for Method B The accepted density of aluminum is 2.702 g/cm3. (a) Calculate the average density for each method. Should all the experimental results be included in your calculations? If not, justify any omissions. (b) Calculate the percent error for each method's average value. (c) Calculate the standard deviation for each set of data. (d) Which method's average value is more precise? Which method is more accurate?
According to the Official Rules of Baseball, a baseball must have a circumference not more than 9.25 in or less than 9.00 in and a mass not more than 5.25 oz or less than 5.00 oz. What range of densities can a baseball be expected to have? Express this range as a single number with an accompanying uncertainty limit.
The density of an irregularly shaped object was determined as follows. The mass of the object was found to be 28.90 g 0.03 g. A graduated cylinder was partially filled with water. The reading of the level of the water was 6.4 cm3 0.1 cm3. The object was dropped in the cylinder, and the level of the water rose to 9.8 cm3 0.1 cm3. What is the density of the object with appropriate error limits? (See Appendix 1.5.)
When a large or small number is written in standard scientific notation, the number is expressed as the product of a number between 1 and 10, multiplied by the appropriate power of 10. For each of the following numbers, indicate what power of 10 would be appropriate when expressing the numbers in standard scientific notation. a. 84,961,306 b. 0.4870 c. 0.000033812 d. 3,890,406,000,000
1.65 An industrial engineer is designing a process to manufacture bullets. The mass of each bullet must be within 0.2 5% of 150 grains. What range of bullet masses, in mg, will meet this tolerance? 1 grain = 64.79891 mg.
1-19 Multiply: (a) (2.16 × 105) (3.08 × 1012) (b) (1.6 × 10-8) (7.2 × 108) (c) (5.87 × 1010) (6.6 × 10-27) (d)(5.2 × 10-9)(6.8 × 10-15)
for the first box the options are 1, 2, 3, 4, 5 for the second box the options are 1, 2, 3, 4, 5 for the thrid box the options are 2, 3, 4, 5, 6, 7, 8, 9, 10
CHE 100-Lab 1 - Measurement Background Reference: Openstax - Chemistry, Atoms First, 2e Section 1.4 - measurement units, derived units, density, water displacement method Section 1.5 - measurement uncertainty, number of digits Chemlibre - Basics of GOB Chemistry (Ball) Section 1.5-measurement uncertainty, number of digits Chem Libre - Chemistry for Allied Health (Soult) Section 1.2-measurement uncertainty, number of digits CHE100 Video Tutorials Measurement units, measurement uncertainty and "every digit is certain, except for the last one" rule. Materials Needed: Electronic balance, beakers (10,50,250 mL), graduated cylinder (100 mL), volumetric flask (50 cylinders. mL), water, household item that will sink in water and fit in one of the beakers or graduated Procedure: 1. Water density (different quantities of water) a. Determine the mass (grams) and volume (mL) of a sample of water using each type of glassware below. For the volume measurement, report the values with the correct…
When writing a number in scientific notation you must move the decimal point (assumed or actual) to the right (negative exponent) or the the left (positive exponent) in order to have the digit term written correctly (1> digit term<10). 0.000034555 move the decimal point to the right 5 times to have the digit term less than 10 but greater than 1! in proper notation 3.4555 x 10-5 60349500000 move assumed decimal in proper notation 6.03495 x 1010 Write the numbers represented by the the following: Number 6,000.345 5003450000000 0.0000000005768909 2222200000999999 0.00690 this means that the digit term must be divided by 10 five times to arrive at the number represented in sci. not. point 10 times to the left this means that the digit term must be multiplied by 10 ten times to arrive at the number represented in sci. not. (A x 10%) (B x 10²) (5.1 x 105) (1.2 x 10²) = Scientific Notation You will need to multiply and divide numbers in scientific notation this semester. It is easy to do! To…
Give two examples of the offset errors (one of the types of systematic error). Please do not give what is already given in the example. Thank you
Convert 75 miles into meters. (Use the conversion 1.0 km = 0.621 miles and use metric conversions for the rest of the conversions).
Ball # Ball #1 Ball #2 Ball #3 Ball #4 Ball #5 Ball #6 Ball #7 Unknown Ball #1 Unknown Ball #2 Unknown Ball #3 Mass (g) 130.58 g 66.90 g 8.35 g 2.71 g 1.49 g 0.70 g 0.24 g 225.52 g 16.33 g 1.812 kg Diameter (cm) 3.15 cm 2.55 cm 1.27 cm 0.97 cm 0.72 cm 0.56 cm 0.40 cm Volume (cm³) 1. Calculate the volume of ball bearings 1 - 7 and record the result with excess significant figures in the table above. Show one example calculation below. Density (g/cm³) Correct Sig Figs! 4 3 π = 3.14159 V= 3 π r³