Homework 2

Round to correct amount of significant figures please. Thank you!

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

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

ts and calculations in chem [References] CHEMWORK 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. 239 Ib man = kg Submit Submit Answer Try Another Version 1 item attempt remaining Visited Previous Email Instructor Sa Cengage Learning | Cengage Technical Support

Calculate density of a metal an unknown metal

An alloy is prepared by mixing 60g copper and 70g zinc. Find the percentage by mass of copper and zinc.

•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

Make a graph of the average mass vs. year. Make sure axes are labeled. Please please answer super fast please answer as fast as possible

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

SECTION-3 : CHEMICAL PROPERTIES V Effervescent tablets bubble when the citric acid and baking soda in them react. V Chemical changes and chemical properties are not the same. Chemical properties of a substance describe which chemical changes will occur and which chemical changes will not occure. V Chemical changes are the process by which substances actually change into new substances. hp 13 0 fó O Scroll m f5 f8 O f9 f10 a f11 2 f12 pau %23 8 8 4 5 7 4 U 5 6 E Y 2 3 G H F.

▼ Part A-Develop a strategy When solving a problem it is important to identify your given and needed units, but it is also important to understand the relationship between those units so you will know how to set up your equation in order to solve the problem. Review the data sets below and use the steps of the problem-solving method to determine whether the given measurements would be appropriate for calculating mass, volume, or density. Drag the appropriate data sets to their respective bins. ► View Available Hint(s) esc 43.2 g of table salt occupies 20.0 cm³ of space Appropriate for calculating mass Q FI 2 W 30 F2 5.00 g of balsa wood, density of balsa wood = 0.16 g/cm³ 3 32 cm³ sample of gold, density of gold = 19.3 g/cm³ 20 E F3 Appropriate for calculating volume $ 4 888 F4 21.0 mL of methanol, density of methanol = 0.79 g/mL R 150 g of iron, density of iron = 79.0 g/cm³ % 5 F5 T 6 6.00 cm³ of baking soda weighs 13.2 g Appropriate for calculating density átv N 11 MacBook Air F6 Y &…

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What is the average density and percent error for rubber stopper

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Show all  computations  and  express final answer in  sig  fig  and  scientific  notation.  Box  out  final answer. Convert1) 3.25 X10^5 ft/ s^2 to m / hour^2

5

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

Mia Lab I Measurements MG Su21 (3) - Word Layout References Mailings Review View Help AaBbCcD AaBbCcDr AaBbC AaBbCcC AaBbCcD Heading 2 Heading 3 Aa - A 2. A- 三三。 . 1 Normal I No Spac. Heading 1 Styles Paragraph Lab 1 Prelab Questions: Measurements Instructions: Complete the following questions before working on the rest of the lab. Show your work with units and correct sigmificant figures for all questions that involve a calculation. 1. Using your textbook or other resource, write the accepted relationship between the inch and the centimeter That is, record how many centimeters are equal to one inch. 2. A student used the procedure for parts B and C of the exercise and obtained the following data: mass of metal cylinder, 45.120 g. initial volume of water in graduated cylinder, 10.5 mL, volume level after adding metal sample to water, 17.1 ml. Use this data and show your work to determine the values listed below. Show units and round results to appropriate significant digits. a) Volume…

2) _____________ mL

A cooking recipe lists adding 3.0 qt of water as a step. How many mL of water is this?

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Course Home m/course.html?courseld=16574313&0penVellumHMAC=ef41415d9158412623399163083b2ede#10001 ODiem 2.47 Part I Identify the numbers from the statements above as exact or measured. Sort these numbers into the proper categories. Reset Help 1s 1 day 1 gal of gasoline 1 kg of plums 3.8m 950mg of calcium 50.0km 22mcg of pesticide Measured Exact P Pearson

[References] blems 1 pt INTERACTIVE EXAMPLE Uncertainty in Measurement 1 pt In analyzing a sample of polluted water, a chemist measured out a 25.00-mL water sample with a pipet. At another point in the analysis, the chem to measure 25 mL of a solution. 1 pt The quantity 25 mL means that the volume is between X and X mL. 1 pt The quantity 25.00 mL means that the volume is between X and x mL. 1 pt Resubmit Hide Tutor Steps 1 pt Incorrect

pland Morris.. O Trying to connect... Share e Edit View Insert Format Tools Helr cument is open in another tab for offline editing. Editing from this tab is suspended and changes from other sessions will not be shown until you reconnect to the network. Practice Test - Chapters 3 1. How many significant figures are in the following measurements? 23 seconds 4.12 grams 202 liters 3.02 minutes 3,000 dollars 0.23 centimeters 0.002 kilobytes 1.0300 milliliters What is the best estimate for the volume of the niece of gold in this image?

How do I solve this question? The answer has to be in scientific notation and rounded to the appropriate number of significant figures.  b.) 5.78 * 10-3 - 7.98 * 10-5

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can someone please let me know if I am doing this correct. The first 3 numbers were given to us. Thank you   Rachel

ctice Test - Measurement, Sig Fig, Scientific Notation, & The Atom actice Test - Chapters 3 &4 w many significant figures are in the following measurements? 23 seconds 4.12 grams 202 liters 3.02 minutes 3,000 dollars 0.23 centimeters 0.002 kilobytes 1.0300 milliliters

Q3. Why does the percent-error equation use the absolute value of the error?

Show all  computations  and  express final answer in  sig  fig  and  scientific  notation.  Box  out  final  answer. 140. lb / in^2 to kg/ Gigameter^2