lab 1 bio

•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 human hair is 75 um across. How many inches is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %D 0.01 100 10 1 1x 10° 1 x 10-6 0.1 2.54 1 x 106 0.33 0.001 0.003 3.0 1 x 10-9 75 1000 0.00003 in mm cm um 30

Which instrument would be used to measure the volume of a diamond? 1. graduated cylinder 2.triple-beam balance 3. Celsius thermometer 4. metric ruler

The density of a metal is 8.67 g/cm3. How many pounds are in 298.86 in of the metal? (You can use the conversion factor approach. Or, you can convert density in g/cm to Ib/in and then multiply the result times number of pounds. 2.52 cm = 1 inch 454 g = 1 lb Please see 'answers to extra problems' question 10 for hints on how to do this.) You need to write your answer in the box with one number past the decimal. Please don't worry about the sig figs in this case. In these formula problems, the Canvas software will give a variety of questions and each student gets their data with different sig figs. So I just have to choose and sometimes it might seem that one past the decimal is not the correct sig figs. Nonetheless, you have to follow that direction.

I measured a line that was 8.4 centimeters which is the same as 3.375 inches. How do I calculate the percente relative error?

A small amount of resin weighing 4.56g occupies a height of a 10-mL graduated cylinder equivalent to one mL. One mL of water was added and the level was read at 1.7 mL. Estimate the density of the resin. * Mark only one oval. 6.5 g/mL 2.68 g/mL 4.56 g/mL 15.2 g/mL 0000

Information is given in questions 1 and 2. Answer #3 fill the chart.

Please answer the questions. A 6.2-ft person weighs 175 lbs. Express this person's height in meters and weight in kg. The density of ammonia gas under certain conditions is 3 0.625 g/L. Calculate its density in g/cm³

I have to set up my chemistry homework this way as I need to know how to convert 27.6 mm to um and 27.6 mm to Gm. It has to be set up the way the picture shows.

An electric current of 155.0 mA flows for 42.0 minutes. Calculate the amount of electric charge transported.. Be sure your answer has the correct unit symbol and 3 significant digits. 0 x10 μ 0 9 X

General Chemistry Laboratory I Lab 1 Significant Figures and Dimensional Analysis Student name PRE-LABORATORY QUESTIONS 1. How many significant figures are in each measurement? (1) 0.0044500 m (2) 5.003 km (4) 1.00 x 10³ s (5) 0.002 mm 2. Define accuracy and precision. 3. Convert 1.567 kilometers to centimeters.ccurate d 4. Convert 3.70 milligrams to kilograms. O Date: Page 1 IN-LABORATORY WORKSHEET 1. Give the number of significant figures in each of the following numbers. (1) 1,278.50 (2) 120,000 (4) 0.0053567 (5) 670 (7) 8.002 (8) 823.012 (10) 2.60 (Prepared by W. Song) (3) 10 dm (6) 10,000 m (3) 90,027.00 (6) 0.00730 (9) 0005789

Use the Density interactive to place the densities of the objects from highest to lowest. Wood 79.170g scale /279.2mL in water Lead 47.460g scale/204.2mL in water Mystery 37.380g scale/204.2mL in water I placed the higest density to lowest density: Wood Lead  Mystery  It came out incorrect, stating: You do not have the highest density object at the top. Remember that density is the mass per unit volume. To get the volume, you need to subtract the initial volume of the water in the graduated cylinder from the final volume after the object is fully submerged.Note: The inital volume of water is 200.0mL

A student is measuring the mass of 20 paper clips using an electronic balance that measures to the thousandths of : balance displays the value for the mass of the paper clips: 20.120 g. gram. The a Which of the values would be acceptable ways to record this mass in a lab notebook? 20 g 20.1 g 20.12 g 20.120 g 20.1200 g

The density of a metal is 2.42 g/cm3. How many pounds are in 84.87 in of the metal? (You can use the conversion factor approach. Or, you can convert density in g/cm3 to Ib/in3 and then multiply the result times number of pounds. 2.52 cm = 1 inch 454 g 1 lb Please see 'answers to extra problems' question 10 for hints on how to do this.) You need to write your answer in the box with one number past the decimal. Please don't worry about the sig figs in this case. In these formula problems, the Canvas software will give a variety of questions and each student gets their data with different sig figs. So I just have to choose and sometimes it might seem that one past the decimal is not the correct sig figs. Nonetheless. you have to follow that direction.

5. The Handbook of Chemistry and Physics lists the density of a certain liguid to be 07988 g/mL. Fred experimentally finds this liquid to have a density of 0.7914 a/ml The teacher allows up to +/- 0.500% error to make an "A" on the lab. Did Fred make an "A"? Prove your answer,

Specific Gravity question-A urine sample has a density of 1.030 g/mL. What is the specific gravity of the sample?

Chapter 1 Item 10 Use appropriate metric prefixes to write the following measurements without use of exponents. 2.3 x 10-10 L O 0.23 µL 2.3 nL 23 ML 0.023 nL 2.3 µL 0.23 nL Submit Request Answer P Pearson Privacy Po Copyright O 2020 Pearson Education Inc. All rights reserved. | Terms of Use 719% Learch F2 F3 F6 F4 F5 F7 F11 F9 F8 F10 24 & 3 * 00

Calculate the percent error of the density of ethanol is measured to be 0.73 g/mL (true value is 0.79 g/mL)

1) (0.7546 m)(0.89 m) [Select] 2) 143.22 cm² / 13.3 cm = [Select] m² cm

The density of mercury is 13.6 g/cm3. The density of mercury is ________ kg/m3. Group of answer choices

Accuracy and Precision of Laboratory Glassware Two students measured the density of water three times each. Their results are shown below. Trial Student 1 Student 2 2. 3 0.953 g/mL 0.949 g/mL 0.956 g/mL 1.102 g/mL 1.005 g/mL 0.901 g/mL 8. Calculate the percent error in the measurements for student 1 and student 2. Show your work. 9. Calculate the standard deviation in the measurements for student 1 and then do the same for student 2. Show your work. 10. Which student is more precise? Explain. 11. Which student is more accurate? Explain. 2.

After completing the significant figures lab as outlined in the lab manual, you compare your results with one of your peers who who performed the lab on a different day.  You determine the density to be a different value. Assuming you both performed the lab according to the lab manual and made no errors, what could cause this discrepancy? If you measured slightly different volumes the density could be different. 2. This is not possible. If you both performed the experiment with no errors you should end up with exactly the same result. 3.If the temperature of water differed you could measure a different density 4.If you measured the density in metric units and your friend measured in imperial the density would be different.

This question requires a file upload. You will need to write your answer paper and take a picture or enter it into an electronic format and upload the file. A Tunner can run a 5.0 kilometer race it a time of 21 minutes n the vacium uf space light travels at a speed of 186 000 miles per second. How many centimeters can light travel in a year? upload a response tile (15MB max) Choose File No file chosen

a students was measuring the ratio of a circles circumference qnd diameter they found the circumference to be 6.28cm and the diameter to be 1.8cm. the actual ratio (circumference divided by diamter) was 3.14 what was their percent error?

This is a question on a practice test. It's not for a grade, I just want to understand how to find the answer.

Beaker directions: • Measure the liquid in the beaker. Look at what the lines stand for (these are very limited in their ability to measure). Account for all digits on the instrument and then add 1 estimated digit. • If there is not a line for a place value (1, 2, 3...), then that is the furthest you can estimate! O 48.05 48 48.0 100- 80 60 40 20 beaker B O 48.005

Student A measures an object and records a value of 1.5 cm. Student B measures the same object and records a value of 1.50 cm. They have both done their measurements correctly. Why do these measurements differ?

I need help understanding how to compute Density and Specific Gravity. Density question- Greg as a blood volume of 5.9 qt. If the density of blood is 1.06 g/mL, what is the mass in grams, of Greg`s blood? Density question- If Ethanol has density of 0.79 g/mL, how many liters of ethanol contains 1.50 kg of ethanol Specific Gravity question-A urine sample has a density of 1.030 g/mL. What is the specific gravity of the sample?

Which of the following weights would you expect to be suitable for weighing on an ordinary bathroom scale? O2500 µg O2.0 x 10 mg 04x 10° cg 5.5 x 10 dg 0 5x10 4 kg Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining 5.5 x 10° dg corresponds to approximately 1.2 x 104 lb which exceeds the maximum weight that can be mea help to remember that 1 kg 2.205 lb. Provide Feedback B. * amazon