Measuring mass 1. Find the actual weight of the items in the table below and record. Some hints on measuring Hint-Use the triple beam balance for smaller items, and the floor scale for larger ones. Ask your instructor for help using either of these. Hint-Your instructor will tell you about the weight of an automobile later. Hint-Unless you've got a million $1 bills handy, you'll need to think of another way of figuring out their weight. Think! mass of a penny mass of the physiology textbook mass of your backpack mass of you mass of a pen mass of an automobile mass of a million $1 bills actual

Referring to Table 2.8, which substance listed is most dense? Which substance is least dense? For the two substances you have identified, for which one would a 1.00-g sample occupy the larger volume?

1. You have 5 blocks that are the same size, but different 1 kg 2 kg 3 kg 4 kg 5 kg masses. The lightest one is 1kg, the heaviest one is 5kg. The picture shows how the 2kg and 5kg blocks float and sink in water. On the picture, draw where the other blocks would end up if you put them in the water. Explain why you think it would look that way? 2 kg

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

1. Describe how to use conversion factors correctly using an example. 2. Write a number between 1.000 and 9999999.99. Write the number of significant figures in your number. 3. Give an example of how to find significant figures in calculations for A addition or subtraction B. multiplication and division

A jet airplane reaches 843. km /h on a certain flight. What distance does it cover in 15.0 min? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also , be sure your answer includes all the correct unit symbols.

•All groups will add nystatin (an antifungal) to their tubes. The stock concentration is (50 mg/mL). The final concentration will be 50 µg/mL. ● • Calculate how much nystatin will be added to your TSA tubes. Each 15 mL TSA tube will get final concentration of 50 µg/mL. The …... will be used. Pipettor Blue Yellow Grey Volumes 100 - 1000 μL 10 - 100 μL 1-10 μL μL of nystatin to give a pipettor

A cubit is a measurement of distance from the ancient near east which is equivalent to about 1.5 feet. If a ziggurat (a cool pyramid...google it to learn more)covers an area of 1,612 cubits? what is its area in square meters? (3.28 feet = 1 meter) Note: When entering a number for questions like these significant figures are not considered. Instead, please answer to 5 decimal places. Your Answer: Answer units

2. For this question you'll need to perform calculations for the data listed below. Imagine you performed the same set of measurements as the instructor did in the video using a 10-mL graduated cylinder. Be sure to show your calculations on this sheet. density of water 0.995124 g/ml mass of empty flask mass of flask + water 24.3165 g, 34.3175 g. 44.1982 g. 54.1597 g. 64.1712 g. 74.2704 g. 84.2420 g. 94.6730 g. 103.9727 g. 114.7728 g 15.5552 g (10 runs) a. Calculate the mean volume of water for the graduated cylinder data above. b. Calculate the standard deviation for the volume of water for the graduated cylinder data typed up above on this page. c. Calculate the standard error for the volume of water for the graduated cylinder data typed up above on this page.

For the image attached Make a x and y axes graph of the average mass vs. year.