First Name Section M W

Similar documents
Math Skills. Fractions

VOLUME CALCULATIONS PRACTICE

Module 4 Conversion Factors

BRCC CHM 101 Class Notes Chapter 1 Page 1 of 7

Measurement. Scientific Notation. Measurements and Problem Solving. Writing Numbers in Scientific Notation

Unit 1 - INTRODUCTION MEDICAL MATH Listening guide

CHM Units and Dimensional Analysis (r14) Charles Taylor 1/6

Using the Metric System

REVIEW PACKET FOR CHEM 110 EXAM 1

BEFORE YOU DO ANYTHING ELSE: PUT YOUR NAME ON THIS EXAM AND ON THE APPENDICES PACKET!

Introductory Chemistry: A Foundation, 6 th Ed. Introductory Chemistry, 6 th Ed. Basic Chemistry, 6 th Ed.

Lecture 2. Professor Hicks General Chemistry (CHE131) Spring Units. units are like apples and oranges. any number of

MTH 133 Solutions to Exam 1 October 11, Without fully opening the exam, check that you have pages 1 through 11.

Solutions to: Units and Calculations Homework Problem Set Chemistry 145, Chapter 1

Module 4 Conversion Factors

CHAPTER 2: MEASUREMENTS IN CHEMISTRY

Chemistry - Ch 5 Prep-Test

Chemistry Section Review 2.2

General Chemistry Unit 8 Measurement ( )

First Name Section M W

Syllabus Tutors Review from previous class. Resources. Lecture: MW 5:30PM-6:50PM Room 425

In recording measurements, it is necessary to understand 1. SIGNIFICANCE of numbers 2. importance of UNITS.

Chemistry 104 Chapter Two PowerPoint Notes

Would you be breaking the speed limit in a 40 mi/h zone if you were traveling at 60 km/h?

Center of Gravity and Center of Mass

CHAPTER 3. Scientific Notation

Example 3: 4000: 1 significant digit Example 4: : 4 significant digits

Chapter 2: Standards for Measurement. 2.1 Scientific Notation

1 centimeter (cm) 5 10 millimeters (mm) 1 meter (m) centimeters. 1 kilometer (km) 5 1,000 meters. Set up equivalent ratios and cross multiply.

1 gram = kg = 1.0 x 10 3 kg. 1 milligram (1 mg) = 1.0 x 10 3 g. 1 microgram (1µg) = 1.0 x 10 6 g

Measurement Stations. Length, Mass, Volume, Density, Temperature, and Time

DESCRIBING MATTER. Matter is anything that has mass and volume

2 Standards for Measurement. Careful and accurate measurements of ingredients are important both when cooking and in the chemistry laboratory!

Measurement. Measurement, Metric System, Conversions

Float or Sink Density Demonstration

5) If you count 7 pennies, you can only report one significant figure in that measurement. Answer: FALSE Diff: 1 Page Ref: 2.3

Name: Class: Date: General Organic and Biological Chemistry 7th Edition Stoker SOLUTIONS MANUAL

The Metric System and Measurement

Lecture 16: The chain rule

Section 1 Scientific Method. Describe the purpose of the scientific method. Distinguish between qualitative and quantitative observations.

Chapter 2 - Measurements and Calculations

Ch. 2 Notes: ANALYZING DATA MEASUREMENT NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics.

Name /100. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Midterm Exam 3 Solutions (2012)

Chapter 2 Measurements and Solving Problems

Name Date Class MEASUREMENTS AND THEIR UNCERTAINTY

Fall 2016: Calculus I Final

CHAPTER 2 Data Analysis

James Chickos Room B435. Introductory Chemistry 1111

MASS, VOLUME, AND DENSITY HOW TO MAKE LIQUIDS LAYERED!

SCIENTIFIC MEASUREMENT. Ch 2 Chemistry is a lot of math!

WORKSHEET #1. Dougherty Valley HS Chemistry Chemistry Math. 1) Solve for the variables using the expression below.

Unit 2. Scientific Measurement

CHM101 Lab Measurements and Conversions Grading Rubric

Chapter 2. Measurements and Calculations

MTH 133 Solutions to Exam 1 October 10, Without fully opening the exam, check that you have pages 1 through 11.

The Metric System and Measurement

Scientific Measurement

Let C = pounds of cheap tea (the one that sells for $2.60/lb), and Let E = pounds of expensive tea (the one that sells for $2.85/lb).

The number of stars in a galaxy is an example of an estimate that should be expressed in scientific notation.

I. Qualit a Qualit t a ive iv vs. Quantit Quan a tit tiv a e tiv Measurements

MTH 133 Solutions to Exam 1 February 21, Without fully opening the exam, check that you have pages 1 through 11.

College Physics (PHY 1301)

Chapter 3 Metric Units and Conversions

MTH 133 PRACTICE Exam 1 October 10th, Without fully opening the exam, check that you have pages 1 through 11.

Assignment. 1. Complete Problems: 2. Read Chapter for Friday. 3. Don t fall behind!

Chapter 2a. Measurements and Calculations

Unit 1 Introduction to Chemistry & Data Analysis Chapters 1 2 of your book.

Unit 1 Part 1: Significant Figures and Scientific Notation. Objective understand significant figures and their rules. Be able to use scientific

SOLUTIONS - CHAPTER 1 Problems

Ch. 2 Notes: ANALYZING DATA MEASUREMENT NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics.

MEASUREMENTS. Significant Figures

Name: ID No.: Date: Figure 1.1 Length, area, and volume properties of an object.

MEASUREMENT IN THE LABORATORY

Welcome to Chemistry 121

Accelerated Chemistry Study Guide What is Chemistry? (Chapter 1)

First Order Linear Differential Equations

CHEM 103 Measurement in Chemistry

Phy 100 s Lab - Measurement techniques for mass, size and density. Name Course & Sec. Lab Partner

Exam 2 Answers Math , Fall log x dx = x log x x + C. log u du = 1 3

PS 300 Spring 2019 Lecture 2

Notes Chapter 2: Measurements and Calculations. It is used to easily and simply write very large numbers, and very small numbers.

Making Measurements. Units of Length

METRIC CHART. The metric system has three units or bases.

CHAPTER 1 Matter & Measurement

PSSA Released Items 16 Multiple Choice Questions, 1 Open-Ended Response

Defining Physical Science

Chapter 02 - The Chemist's Toolbox

Ch. 3 Notes---Scientific Measurement

Chapter 2 - Analyzing Data

Name Date Class MEASUREMENTS AND THEIR UNCERTAINTY

Exam #2, Electrostatics

Table One. Mass of a small package using three different measurement methods

Length is the distance from one point to another. Length has standard units of measurement such as inches or centimeters.

Measurement. Chemistry Chapter 2 Scientific Notations, Measurement, Metric System

Chapter 2. Preview. Objectives Scientific Method Observing and Collecting Data Formulating Hypotheses Testing Hypotheses Theorizing Scientific Method

Metric System. An Overview of the Concepts of Mass, Volume, Length, Temperature, and Density

Math 342 Partial Differential Equations «Viktor Grigoryan

inflow outflow Part I. Regular tasks for MAE598/494 Task 1

WHAT IS CHEMISTRY? Chemistry 51 Chapter 1. Chemistry is the science that deals with the materials of the universe, and the changes they undergo.

Transcription:

Last Name Due Date First Name Section M W DENSITY CALCULATIONS PRACTICE This is Practice Work. Unless I give this uring lecture, this is not ue for a grae. I i not give you room on this sheet to o your work. You will nee your own paper. RELEANT EXAM INFORMATION (Part of Exam) There are no ensity calculations questions in Part of the Exam. You are responsible for knowing the symbols an units for ensity. You are responsible for knowing (memorize) the general equation for ensity: ρ H2 O = H 2 O = mass volume = m You must be able to rearrange the ensity equation (without numbers or measurements variables only). The ensity of water must be memorize: ρ H2 O = H 2 O = g H 2 O ml H 2 O ρ H2 O = H 2 O = ρ H2 O = H 2 O = cm 3 H 2 O ml H 2 O cc H 2 O ml H 2 O Know how to write unit equations an unit factors when given the ensity of a substance. (Part 2 of Exam) You must show your work accoring to For plug-n-chug equations: You must show at least two steps between the initial equation an the final answer. For equations that require rearranging: You must show at least two steps between the initial equation an the final answer. For calculations using conversion factors: You must use units through each step. The final answer must have units. The answer must be numerically correct. The answer must have the exact number of significant igits correct. The units in the answer must match the units in the work. Page of 9

Max Time: Remember that Max Time is an absolute bottom-line time perio. If you use max time on all questions, you will not finish the Exam. PRACTICE PROBLEMS USING THE DENSITY EQUATION For these questions, you may not use ensity as a conversion factor. You must use the ensity equation. ) The mass of an object is 08.00 grams. The object has a volume is 2.70 cubic centimeters. Determine the ensity of the substance. (8 pt) Max Time: 4 min 2) The ensity of a liqui is 5.00 g/ml. A sample of the liqui has a mass of 20 grams. 2a) Using variables only, write the ensity equation an rearrange it to isolate volume (). (4 pt). Max Time: 3 min 2b) Use your answer to Question 2a to calculate the volume (in ml) of the liqui. (8 pt). Max Time: 4 min Again: you must use the ensity equation/rearrange ensity equation for creit. 3) The ensity of a liqui is 0.85 grams per cubic centimeter. A sample of the liqui has a volume of,000. cubic centimeters. 3a) Using variables only, write the ensity equation an rearrange it to isolate mass (m). (3 pt) Max Time: 2 min. 3b) Use your answer to Question 3a an the ata in the prompt to calculate the mass (in kilograms) of the substance. (0 pt). Max Time: 5 min Again: you must use the ensity equation/rearrange ensity equation for creit. 4) The ensity of a soli is 5.92 grams per cubic centimeter. 4a) Write the conversion factor base upon the ensity of this substance. (4 pt) Max Time: 2 min 4b) A sample of the soli has a volume of 0.000 cm 3. Use imensional analysis to etermine its mass in grams. (0 pt). Max Time: 5 min Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit 5) The ensity of a liqui is 0.979 grams per milliliter. 5a) Write the conversion factor base upon the ensity of this substance. (4 pt) Max Time: 2 min 5b) A sample of the liqui has a mass of 2.4 kilograms. Use imensional analysis to etermine its volume (in milliliters). (3 pts). Max Time: 7 min Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit. 6) A -ml sample of Liqui Metal X (LMX) has a mass of 8.5 grams. 6a) Write the conversion factor base upon the information given. (4 pt) Max Time: 3 min 6b) An inustrial vat contains 52,000 L of LMX. Use imensional analysis to calculate the mass of LMX in tons. ( ton = 2000 lbs.) (9 pts). Max Time: 9 min Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit. Page 2 of 9

Solutions ) The mass of an object is 08.00 grams. The object has a volume is 2.70 cubic centimeters. Determine the ensity of the substance. (8 pt) Max Time: 4 min (or ρ) = mass volume (or m ) ( pt) The initial variables-only equation must be written ρ = 08.00 g 2.70 cm 3 (3 pt) Plug numerical values in correctly with units ρ = s 4.00 g cm 3 s (4 pt) ( pt) correct numerical answer ( pt) correct sigigs ( pt) answer must have units ( pt) units must match work Page 3 of 9

2a) Using variables only, write the ensity equation an rearrange it to isolate volume (). (4 pt). Max Time: 3 min = m ( pt) Initial equation () = m xx Minimum of two Wrote enominator for cross-multiply set up. m () = xx (2 pt) steps between initial equation an cross-multiplication m = xx the answer. Divie both sies by to isolate xx. Cancel. s m s = xx ( pt) Simplify 2b) Use your answer to Question 2a to calculate the volume (in ml) of the liqui. (8 pt). Max Time: 4 min = m (0 pt) rewrite the initial equation. The answer to Question 2a must be correct to receive any creit for Question 2b. = 20 g ( 5.00 g ml ) (3 pt) Plug numerical values in correctly, incluing units. Show work. = ( 20 g ) ( ml ) ( pt) 5.00 g Remember: When there is a fraction in the enominator, flip the bottom guy an multiply. I want to see this step in your work. ρ = s8.0 gs (4 pt) ( pt) correct numerical answer ( pt) correct sigigs ( pt) units must be inclue in the answer ( pt) units must match work Page 4 of 9

3a) Using variables only, write the ensity equation an rearrange it to isolate mass (m). (3 pt) Max Time: 2 min. = m ( pt) Initial equation () = xmx ( pt) write the initial equation. Wrote enominator for crossmultiply set up. xmx = ( pt) cross-multiplication, correct answer. As long as you show your work, you can use any metho to solve this problem. You cannot, however, simply write the answer because you can see it in your hea. You coul have also multiplie both sies by. 3b) Use your answer to Question 3a an the ata in the prompt to calculate the mass (in kilograms) of the substance. (0 pt) m = (0 pt) rewrite the rearrange equation. m = ( 0.85 g cm3 ) (000. ) (3 pt) Plug numerical values in correctly, incluing units. cm 3 m = ( 850.0 g ) ( kg 000 g ) (3 pt) Convert to kg; correct conversion factor; incluing units m = s0.8500 kgs (4 pt) ( pt) correct numerical answer ( pt) correct sigigs ( pt) answer must have units ( pt) units must match work Page 5 of 9

4) The ensity of a soli is 5.92 grams per cubic centimeter. 4a) Write the conversion factor base upon the ensity of this substance. (4 pt) Max Time: 2 min 5.92 g = cm 3 pt for number pt for number pt for units pt for units An equals sign must be use. Using a colon or ash = 0.5 pt euction. 4b) A sample of the soli has a volume of 0.000 cm 3. Use imensional analysis to etermine its mass in grams. (0 pt). Max Time: 5 min Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit 0.000 cm3 ( ) ( 5.92 g ) = x59.200 gx cm3 Point Breakown 0.000 cm3 ( ) ( 5.92 g ) = x59.200 gx cm3 pt: initial value pt: initial value ( pt) correct numerical answer pt: unit inclue pt: unit inclue ( pt) correct sigigs pt: numerator an pt: numerator an ( pt) units match work enominator correct enominator correct ( pt) units through every step Page 6 of 9

5) The ensity of a liqui is 0.979 grams per milliliter. 5a) Write the conversion factor base upon the ensity of this substance. (4 pt) Max Time: 2 min 0.979 g = ml pt for number pt for number pt for units pt for units An equals sign must be use. Using a colon or ash = 0.5 pt euction. 5b) A sample of the liqui has a mass of 2.4 kilograms. Use imensional analysis to etermine its volume (in milliliters). (3 pts). Max Time: 7 min Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit. 2.4 kg ( ) ( 000 g kg ) ( ml 0.979 g ) = x2.5 0 3 mlx Point Breakown 2.4 kg ( ) ( 000 g kg ) ( ml 0.979 g ) = x2.5 0 3 mlx pt: initial value pt: initial value pt: initial value ( pt) correct numerical answer pt: unit inclue pt: unit inclue pt: unit inclue ( pt) correct sigigs pt: numerator an pt: numerator an pt: numerator an ( pt) units match work enominator correct enominator correct enominator correct ( pt) units through every step The conversion from kg to grams must be shown in imensional analysis. Do not simply slap the ecimal point aroun. Page 7 of 9

5) The ensity of a liqui is 0.979 grams per milliliter. 5a) Write the conversion factor base upon the ensity of this substance. (4 pt) Max Time: 2 min 0.979 g = ml pt for number pt for number pt for units pt for units An equals sign must be use. Using a colon or ash = 0.5 pt euction. 5b) A sample of the liqui has a mass of 2.4 kilograms. Use imensional analysis to etermine its volume (in milliliters). (3 pts). Max Time: 7 min Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit. 2.4 kg ( ) ( 000 g kg ) ( ml 0.979 g ) = x2.5 0 3 mlx Point Breakown 2.4 kg ( ) ( 000 g kg ) ( ml 0.979 g ) = x2.5 0 3 mlx pt: initial value pt: initial value pt: initial value ( pt) correct numerical answer pt: unit inclue pt: unit inclue pt: unit inclue ( pt) correct sigigs pt: numerator an pt: numerator an pt: numerator an ( pt) units match work enominator correct enominator correct enominator correct ( pt) units through every step The conversion from kg to grams must be shown in imensional analysis. Do not simply slap the ecimal point aroun. Page 8 of 9

6) A -ml sample of Liqui Metal X (LMX) has a mass of 8.5 grams. 6a) Write the conversion factor base upon the information given. (4 pt) Max Time: 3 min Timing: 30 s (all levels) ml LMX = 8.5 g LMX pt for number pt for number pt for units pt for units 6b) An inustrial vat contains 52,000 L of LMX. Use imensional analysis to calculate the mass of LMX in tons. ( ton = 2000 lbs.) Again: you may not use the ensity eqn; you must use ensity as a conversion factor for creit. (9 pts) Max Time: 9 min ( 5.00 05 cm 3 ) ( 8.5 g cm ) ( lb 3 453.59 g ) ( ton ) = x0.2 tonx 2000 lbs POINT BREAKDOWN ( 5.00 05 cm 3 ) ( 8.5 g cm ) ( lb 3 453.59 g ) ( ton ) = x0.2 tonx 2000 lbs pt: initial value pt: initial value pt: initial value pt: initial value ( pt) correct numerical answer pt: unit inclue pt: unit inclue pt: unit inclue pt: unit inclue ( pt) correct sigigs pt: numerator an pt: numerator an pt: numerator an pt: numerator an ( pt) answer inclues units enominator correct enominator correct enominator correct enominator correct ( pt) units must match work Page 9 of 9

2024 © sciencedocbox.com Privacy Policy | Terms of Service | Feedback