The Mole And Volume Worksheet

Molar Mass Worksheet Calculate the molar mass of the following chemicals: 1) Cl2 2) KOH 3) BeCl2 4) FeCl3 5) BF3 6) CCl2F2 7) Mg(OH)2 8) UF6 9) SO2 10) H3PO4 11) (NH4)2SO4 12) CH3COOH 13) Pb(NO3)2 14) Ga2(SO3)3. barium bromide d. volume is changed to 5. How many moles of CaCl 2 are in solution? How many moles of water are present? b. Molarity = mass in grams x 1 mole =. Calculate the molar mass of the unknown vapor. It is important to note that concentration x volume (or CV) is equal to the total amount of substance. In this molarity worksheet, students fill in unknowns such as mass of solute, moles of solute, volume of solution and molarity of solution in a chart with given solvents. Molar mass is useful in finding the number of moles of a substance within a given sample. Some of the worksheets for this concept are Density and volume, Density practice work 1, Lesson plans on density for middle school teachers, Exploring mass volume density an integrated science and, Volume mass and density lesson, Moles mass and volume work, Volume mass density work, Science. 4 L for a gas at STP We will work with ALL of the equalities today! Each equality can be written as a set of two conversion factors (the things you write in your T-Chart) Mole-Volume Conversions 1. 557 mol x 2 mole KOH x 1L = 0. 384403km x 1000m km x 100cm m x 10 pennies 1. Thanks so much. 24 liters; 22. 1 hand = 4 inches 1 township = 36 square miles *Derive your area conversion factors by working with length and squaring all dimensions. Find the volume in the problems below. Titration endpoint: The quantity of reactant in the standard solution added during the titration is stoichiometrically equivalent to the quantity of reactant in the analyte at the titration. All Rights Reserved. where \(n\) is the number of moles of gas and \(k\) is a constant. 0 L and weighs 39. MOLAR G RELATIONSHIP AS VOLU ME WITH MOLE GASES NUMBER MOLAR VOLUME. A mole can also be a measure of volume when we are talking about gases. 2 moles of Ca(NO3)2 weigh? 6) What is the molar mass of MgO?. A sample of a substance has a mass, volume (generally used with gases), and number of particles that is proportional to the chemical amount (measured in moles) of the sample. 40 moles of AgNO 3? SEE LAST PAGE FOR KEY. of CO and 02 are required to produce 10 moles of C02? If 5. The front side of the Moles and Mass worksheet we are using is from the Instructional Fair Chemistry worksheets. Answer: The volume recorded would be too high and the estimate would be high. Use mole ratios from the balanced equation to calculate the quantity of one substance in a reaction given the quantity of another substance in the reaction. Physical Chemistry Laboratory I CHEM 445 Experiment 2 Partial Molar Volume (Revised, 01/13/03) Volume is, to a good approximation, an additive property. Cartesian Diver Activity—Worksheet Answer Key 1 Cartesian Diver Worksheet Answer Key Objectives To demonstrate understanding of Pascal’s Law and Archimedes’ principle. For compounds, add the molar masses in the ratios indicated in the chemical formulas for the molar mass of the compound. 32 grams of nitric acid (HNO3) dissolved in 750 mL of water? 3) What is the pH of a solution that contains 1. How many moles of O 2 does the flashbulb contain? (Answer: 2. 04 x 1023 atoms He 2. The mole is one of the central concepts in stoichiometry. 02 x 10 23 of them to be exact. 929 g occupies a volume of 426 ml- at OOC and. 4 LITERS OF A GAS AT STP (standard temperature and pressure) FORMULA CALCULATION MASS CHEMISTRY WORKSHEET # 2: THE MOLE AS A UNIT OF MASS USE A SEPARATE SHEET OF. Mole Conversion Worksheet -- Final Fill in the following tables for the conversion factors for this unit: Moles atoms, molecules or formula units Moles Mass (grams) Mole Volume (Liters) (for gases at STP only) Make the following calculations. 300 mL of 4 M sodium hydroxide solution. 0 grams CH 4? 3. #20 Introduction to the Mole Golda Steiner, Park Ridge High School, Park Ridge, NJ Introduction Description This unit uses a discovery-based method to introduce the mole concept without relying on students' strong background. 80 grams of AgNO 3 in enough. In the balanced equation, 2 moles of magnesium atoms react with 1 mole of oxygen molecules. How many atoms are in 6. Moles, Mass and Particles Worksheet 1) How many formula units are there in 24 g of FeF3? 2) How many formula units are there in 450 g of Na2SO4? 3) How many grams are there in 2. But as much as such a product might appeal to companies hungry for content, it would be redundant from the outset, because “The Mole Agent” is already one of the most heartwarming spy movies. Chemistry lI-IIGTIProAP Nome WS The Mole Dale Per. Set your such that the temperature goes from –400˚C to 200˚C. This worksheet provides examples of the way to do so, and some practice problems for students to try by themselves. Mole Worksheet #1 : moles particles Converting moles to particles: 1 mole = 6. 4 the Mole and the Volume of Gas - Free download as Powerpoint Presentation (. Compare the mass of a mole of eight year old children compare to the mass of the earth. You need to know the formula connecting moles, mass and formula mass AND know how to use the molar volume in these calculation methods. 165 moles of aluminum chloride in 820. (For Ne: a = 0. The Mole; Molar Mass; Notes Notes (filled in) Checkpoint 3A, 3AA Mole IV Concepts Covered: Molar Mass; Molar Volume; Molar Concentration; Notes; Notes (filled in) Mole Conversions Worksheet (molar mass & molar volume) & Answers; Molar Concentration Worksheet & Answers; Checkpoint 4A, 4AA (molar mass & molar volume) Checkpoint 4B, 4BB (molar. This page describes, with fully worked out examples, how to calculate the volume of gas formed from a given masses of reactants. Ideal Gas Law Calculation. Mass Density And Volume. Mole Calculation Fun : Moles are, indeed, an untapped reservoir of fun. Part 1: Molar Mass. The Mole and Volume Worksheet. 250 mol silver B. More on molar volume of gas. 4 liters called the molar volume of a gas? D) In the following equation, what volume of hydrogen will produce 0. Mole-Volume Conversions. Worksheet 11. 8 moles of argon gas at a temperature of 85ºC is 420 torr. The mass of solvent (in kilograms) in the solution. 2O) The molar mass was determined by experiment to be 60. A buffer solution contains 0. 02 x 1023 AVOGADRO LAW VOLUME GAS. (where n is number of moles, C concentration and V is volume). The equal volumes of gases at the same temperature and pressure contain equal numbers of particles. 15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be? 3. But as much as such a product might appeal to companies hungry for content, it would be redundant from the outset, because “The Mole Agent” is already one of the most heartwarming spy movies. Ideal Gas Law Worksheet PV = nRT. Stoichiometric ratio: the molar ratio of substances in a chemical reaction (coefficients in a balanced chemical equation) Limiting reactant the reactant in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete. Find the volume in the problems below. Calculate the molarity of 34. If you come out w/. How many moles are contained in 78. The interconversion between mass, moles, number of atoms or molecules, and volume is described. Download, Fill In And Print Calculating Ph And Poh Worksheet With Answers Pdf Online Here For Free. Using your answer from Part A, calculate the volume of a mole of Na atoms (in cm3/mol ). Molar Volume - Displaying top 8 worksheets found for this concept. In the balanced equation, 2 moles of magnesium atoms react with 1 mole of oxygen molecules. All Rights Reserved. But, is there any relationship between volume and mass, or mole and number of particles? Lets investigate. Some of the worksheets displayed are Chemistry molar volume at stp practice problems, Chemistry gas laws and molar volume at stp review work, Molar mass work, Molar volume, Chemistry computing formula mass work, Work 7, Molar mass work, Concentration work w 328. C) Why is 22. Molarity Practice Worksheet Find the molarity (concentration) of the following solutions: Molarity = mole/Liters Volume must be in liters! 1 liter = 1000 mls 1) 2. 0040 moles = 58 g/mole 13. All About Stoichiometry worksheet 11. 8 which is a better unit for expressing molar mass amu or gramsmole. 7 moles of propane are at a temperature of 28 oC and are under 154. A buffer solution contains 0. Molar Volume Worksheet Answer Key. ppt), PDF File (. Chemistry Review Packet Answers chemistry if8766 instructional fair guide. The mole and avogadros number worksheet. 40 moles of AgNO 3? SEE LAST PAGE FOR KEY. 02 x 1023 particles 1 mol = g-formula-mass (periodic table) 1 mol = 22. 1)Using the following equation: 2 NaOH + H. You estimated the length and diameter of a jelly bean to find its approximate volume. 3 mol of C reacts? b. 2 kg when empty. 48 moles of a gas in a 250. How many atoms are there in one mole of carbon? Ans. 0 moles of water is produced, how many moles of hydrogen gas and oxygen gas re required? 21b + 02 2H20 How many moles of tin are produce by reducing 4. 1 league = 5 280 yards. Concentration Worksheet W 328 Everett Community College Student Support Services Program 1) 6. Part 1: Mole ←→ Mass Conversions. Round answers to the nearest hundredth (or 2 non-zero numbers). Use a 250-mL graduated cylinder to measure the final amount of water contained in the foam cup. 022 × 10²³ units of that substance (such as atoms, molecules, or ions). 3 Molar Mass—The Mass of one Mole (page 176-183) Define. Answers must have correct SIGNIFICANT FIGURES, UNITS, CHEMICAL FORMULA 1. 4 dm3 at STP. M = n/V, where n is the number of moles and V is the volume in litres. The current definition was adopted in 1971 and is based on carbon-12. Find the volume in the problems below. This is known as the molar volume of gas and given the symbol V m; The units most commonly used for molar volume of gas, V m, are litres per mole, L mol-1. You are told that, initially, the container contains 0. Worksheet: Mole Problems KEY. Unit conversion worksheets for the SI system, or metric system. (Hint: the number of moles of a substance is its mass/molecular mass and density is mass/volume. The Mole and Volume. 3 M nitric acid. chemistry worksheet # 6 mole problems—molar volume of a gas We have learned that a mole is a mass of material and number of particles. How many atoms are there in one mole of carbon? Ans. Heat the solution in the flask until the temperature is just over 65°C. 10 mole of oxygen in a volume is 2. It is important to note that concentration x volume (or CV) is equal to the total amount of substance. 0 g of ethanol, C2H5OH. A solution is prepared by mixing 100. Chemistry: The Ideal Gas Law Worksheet K-3 Directions : Solve each of the following problems. So if we have 0. 0856 L or 85. 02 x 10 23 molecules. This can be used to check students understanding of chemical calculations. The volume (in liters) and mass (in kg) of pure water are about the same (density is 1 kg/L). The molar volume, symbol V m, is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. Avogadro's Law is in evidence whenever you blow up a balloon. 4L NH 1mol N 2mol NH 28. density; volume substance (mL) x density substance (g/mL) = g substance. Calculate the pressure, volume, temperature and moles of gas. com - the mole questions and answers, the mole test, the mole youtube, the mole fraction of oxygen in air is 0 209, the mole cartoon, the mole and volume worksheet answers, the mole and molar mass worksheet, the mole. MOLAR G RELATIONSHIP AS VOLU ME WITH MOLE GASES NUMBER MOLAR VOLUME. What volume will the following quantities of gasses occupy at STP? 1) 1. Some of the worksheets displayed are Moles mass and volume work, Mole calculation work, Molar volume work, Moles molecules and grams work and key, Mole calculation work, Mole conversions work 1, Mole conversions name chem work 11 3, Moles work. 500 ml of gas is contained at STP. Volume To Moles. M = the molar mass of a substance. Set A: One Step Problems: Convert to moles: 1. 41 L of Ne at STP? 2. Set A: One Step Problems: Convert to moles: Convert to mass in grams: 10. 80 grams of AgNO 3 in enough. Molar conversion worksheet hint start with the given value set up a conversion factor make sure your units are canceling 1. Calculation of titration results - general description. 75x1011pennies 2. Worksheet on Moles and Stoichiometry Three conversions to remember about chemicals - usually used when we are asking about just one chemical: Problems with balanced reactions usually follow this chart - a chemical reaction is involved in these problems: Note questions 1 and 2 are on stoichiometry. To help identify the unknown gas, you must calculate its molar mass. 0% by volume helium. a) How many grams are there in 1. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other. Mole Worksheet #1 : moles particles Converting moles to particles: 1 mole = 6. Plot a graph of temperature (x axis) verses Volume (y axis). The Ideal and Combined Gas Laws PV = nRT or P 1V 1 = P 2V 2 T 1 T 2 Use your knowledge of the ideal and combined gas laws to solve the following problems. 2 how many grams are in 24 moles of sulfur. A mole of a gas occupies a fairly large space—equivalent to ten 2 L soda bottles—because there is so much space between gas molecules. 4: Mole Problems 1. Write a similar expression for the number of moles of H2SO4 in the flask based on [H2SO4] and the volume of H2SO4 (mL). Displaying top 8 worksheets found for - Molar Mass Molar Volume. 4 L O 2! 2 mol Mg 1 mol O 2 = 0. It describes 19th-century developments that led to the concept of the mole, Topics include atomic weight, molecular weight, and molar mass. Moles,’Molecules,’and’Grams’Worksheet’–’Answer’Key’ 1) How many moles are there in 24. Translating atomic masses into molar masses, you can construct conversion factors that convert between the mass of an element and the number of moles of the. 3 x 1024 atoms of silver? 4) How many grams are there in 7. Use the ideal gas law, and the universal gas constant to solve the following problems: with atm: R = 0. 4 x 1023 formula units of AgNO 3? 5) How many grams are there in 7. 045 mol Mg At STP, 22. 4 L of a gas at STP (You do not need to worry about this yet) Each definition can be written as a set of two conversion factors. 1 atom S 6. 1 moles of magnesium atoms, we need 0. It says: "The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0. I need help, in chemistry part, it's kind of difficult for me ): For this assignment, I have to do is: For gases at STP (273 K and 1 atm pressure), one mole occupies a volume of 22. Practice Worksheet. the molar volume is the volume occupied by one mole of any gas, at room temperature and pressure The molar volume is equal to 24 dm 3 (24,000 cm 3). Practice Worksheet. Ideal Gas Law The findings of 19th century chemists and physicists, among them Avogadro, Gay-Lussac, Boyle and Charles, are summarized in the Ideal Gas Law: PV = nRT P = pressure V = volume n= moles of gas, R = universal gas constant T = temperature. 500 moles of Li 2O? 3) How many molecules are in 23. So if we have 0. MOLE WORKSHEET #2 Make the following conversions using unit analysis. 56 x 10-3 mol NaCl C. 0 g/mole), 12. What volume of propanol is present in 580 mL of a 2. How many moles of O 2 does the flashbulb contain? (Answer: 2. Convert the following number of moles of chemical into its corresponding mass in grams. This is just one of the solutions for you to be successful. Worksheets are Chemistry molar volume at stp practice problems, Chemistry gas laws and molar volume at stp review work, Molar mass work, Molar volume, Chemistry computing formula mass work, Work 7, Molar mass work, Concentration work w 328. How many moles of magnesium were burned if at STP, the magnesium was ignited in a 0. A salt 23shaker containing 9. The equal volumes of gases at the same temperature and pressure contain equal numbers of particles. 0 mol Cr 520 g f. Remember that the NaCl will dissociate into its ions, so there are now five moles of particles: one mole Na + , one mole Cl - , and three moles water. Use the ideal gas law, and the universal gas constant to solve the following problems: with atm: R = 0. The volume due to the added solute (per mole) is called the apparent molal volume φV. 50 L of CH 4 at STP. We describe the composition of the stream in various ways. where \(n\) is the number of moles of gas and \(k\) is a constant. 6 Molar Volume and Gas Stoichiometry. 4 atm and the temperature is increased to 100 ° C, what is the new volume? 7. Worksheet 7 - Ideal Gas Law I. It is common in molecular biology to use units of moles and molarity. Record the final volume to the nearest 0. Add up all the volumes. 00 moles of sodium chloride to. Would three balloons, each containing the same number of molecules of different gases at STP, have the same. same number of moles)! This very significant discovery led to the concept of molar volume:. Set A: One Step Problems: Convert to moles: Convert to mass in grams: 10. Many aspects of the problems can be customized to best fit the needs of your students. This worksheet provides examples of the way to do so, and some practice problems for students to try by themselves. Dinitrogen pentoxide. Mole Review Worksheet---Key. 2 mL in the Heat of Fusion Worksheet. Practice: Find the mass, in grams, of 1. All gases have the same molar volume when measured at. 4 Mass Percent Composition from Chemical Formulas—The mass percentages of individual elements in a compound can be determined from the chemical formula and molar mass with the following equation:. Molar ratios are used as conversion factors to relate the number of moles of one substance with the number of moles of another substance. 7 moles of sucrose made into a 3. V is volume of solution in liters (L) in which the indicated mass (m) of solute must be dissolved to make the desired molar concentration (C). The mole and avogadros number worksheet. Here you will find all we have for The Mole And Volume Worksheet. Teachers: email your ORIGINAL chemistry worksheets to The Catalyst! We are in the process of collecting as many original worksheets as we can. 4 mole methanol (CH 3 OH, molar mass=32 g/mole), and 4. It is marketed by G. 4 mol C02 D. It mean, 1 mole any gas have the same number of particle = 6. 18g/L at 25°C and 1 atm? 3. 1 Stoichiometry worksheet 11. 00moldm–3 sulphuric acid and 40cm3 of distilled water. Calculate the atomic mass of the metal if the volume measured in the prelab problem #4 was 30. This customizable and printable worksheet is designed to give students practice calculating from grams of a compound to moles and from moles to grams. Molarity Practice Worksheet Find the molarity (concentration) of the following solutions: Molarity = mole/Liters Volume must be in liters! 1 liter = 1000 mls 1) 2. Avogadro's number may be applied to atoms, ions, molecules, compounds, elephants, desks, or any object. Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, and more. Displaying top 8 worksheets found for - Molar Mass Molar Volume. Students know one mole equals 6. Calculating Ph And Poh Worksheet With Answers Is Often Used In Ph Chemistry Worksheets, Chemistry Worksheets, Worksheets, Practice Sheets & Homework Sheets And Education. 125 g of 3. What is rust? What causes it to form? What can be done to prevent its formation? 2. Find solutions to the following problems on a SEPARATE sheet of paper. 4 liters called the molar volume of a gas? D) In the following equation, what volume of hydrogen will produce 0. 25 M solution can be made using 0. 4 x 1024 molecules of NH 3? 5) How much does 4. Mole-Mass Conversions. Practice Problems 1. How many moles of molecules are contained in 39 l of F2 gas at STP? 5. How many moles of CaCl 2 are in solution? How many moles of water are present? b. MOLES AND VOLUME WORKSHEET WITH ANSWERS (no rating) 0 customer reviews. Mole-Volume Conversions. Remember that "STP" is Standard Temperature and Pressure. ppt), PDF File (. They will be sorted by topic, and posted on this page, where you will be able to print them out for immediate use. I am having trouble doing conversions with moles to grams and molecules, STP (liter and moles) etc. 8 g of solid sodium hydroxide in 600. Calculate the molar mass of each compound. A mole of a substance is the amount of that substance that contains as many particles (atoms or molecules or ions) as there are atoms of 12C in 12 grams of 12C Molar Volume of Gases At s. Assume that butane is an ideal gas and that one mole has a volume of 22. Calculating Ph And Poh Worksheet With Answers Is Often Used In Ph Chemistry Worksheets, Chemistry Worksheets, Worksheets, Practice Sheets & Homework Sheets And Education. Worksheet 11. 1 league = 5 280 yards. 1 tags : Chemists need stoich Diposting oleh Bella Sofie di. Use the coefficients from the balanced equation and multiply it by the appropriate mole ratio to get an answer. Use a 250-mL graduated cylinder to measure the final amount of water contained in the foam cup. 842 M solution of NaOH? a. Displaying top 8 worksheets found for - Molar Mass Molar Volume. You are given the moles of one component and needed to find the volume of another gaseous component. 4 LITERS OF A GAS AT STP (standard temperature and pressure) FORMULA CALCULATION MASS CHEMISTRY WORKSHEET # 2: THE MOLE AS A UNIT OF MASS USE A SEPARATE SHEET OF. txt) or view presentation slides online. Avogadro's number may be applied to atoms, ions, molecules, compounds, elephants, desks, or any object. 31 L*kPa /(K*mole) 1) If I have 4 moles of a gas at a pressure of 5. 1) 52 g of NaCl ANSWER: 0. milliliters of this buffer solution is diluted to a volume of 1. Usually it is the volume of the standard solution required to react with a given quantity of an analyte that is precisely determined during a titration. They are: 1 mole = 6. As a result the molar volume would be underestimated. Mole-Mass and Mole-Volume Relationships Essential Question To what extent is it advantageous to look at chemical composition in terms of moles instead of mass? Do Now How can we use the relationship between moles and other chemical quantities such as mass, volume and density?. The second MOLE QUIZ will look EXACTLY like your first mole quiz, with additional questions that include STP and RTP volumes, and Density. Mole Fraction. 00 Mole fraction 1 Pressure fraction 1 Partial Pressure 1620. 4 litres Deducted by experimentation A mole of oxygen gas weighs 32 grams and takes up a volume of 22. 02 x 1023 particles 1 mol = g-formula-mass (periodic table) 1 mol = 22. What volume of a 0. 0 g/mole), 12. 4 L O 2! 2 mol Mg 1 mol O 2 = 0. 31 L*kPa /(K*mole) 1) If I have 4 moles of a gas at a pressure of 5. One mole of a substance is equal to 6. For homework, assign the Mass-Mole Conversions worksheet (S-C-8-1_Mass-Mole Conversions Worksheet and KEY. 3 Molar Mass—The Mass of one Mole (page 176-183) Define. 0023 moles of C. Ideal Gas Law Worksheet PV = nRT. Find the mass in 2. It is sometimes called the chemist’s dozen. This module shows how the mole, known as Avogadro's number, is key to calculating quantities of atoms and molecules. If the combustion of 9. (where n is number of moles, C concentration and V is volume). Concentration, however, does change with the added amount of solvent. Standard pressure is 1 atmosphere or 760 mm Hg (also called "torr"). Molar volume of a gas is defined as the volume of one mole of the gas. From the graph, estimate the pH at the half-way point of the titration. Tags: mole and it meaning, mole equals to, mole how to remove, mole to a mountain, mole to avogadro s number, mole to joule, mole to mole bridge, mole to mole video, mole to ratio, mole to volume conversion worksheet, mole to volume percent, mole to water, mole under eye, mole yarn, mole zap ant zap. How many molecules are contained in 16. In the balanced equation, 2 moles of magnesium atoms react with 1 mole of oxygen molecules. 500M NaCl is needed for a reaction that requires 146. 89 mole 2) 145 g of H 2 SO 4 ANSWER: 1. This can be used to check students understanding of chemical calculations. 00 moles Ag 14. The volume of the tea (water) is 325 mL. 23 moles of NaCl and 5. A solution is prepared by mixing 100. Worksheet: Mole Problems KEY. You may remember from previous science classes that all gases behave basically the same as far as the physical properties of temperature. Unit conversion worksheets for the SI system, or metric system. Grams and Liters Molarity Calculations Worksheet Name _____ Period _____ Molarity is the number of moles of solute dissolved in one liter of solution. in chemistry, the mole & volume!? I need help, in chemistry part, it's kind of difficult for me ): For this assignment, I have to do is: For gases at STP (273 K and 1 atm pressure), one mole occupies a volume of 22. Chemistry lI-IIGTIProAP Nome WS The Mole Dale Per. mass mass problems worksheet - Learning regarding the actual value of money is among the primary classes kids of today can learn. of CO and 02 are required to produce 10 moles of C02? If 5. Mass-volume (or volume-mass) Volume-Volume Mole-Volume Stoichiometry. Convert the following number of moles of chemical into its corresponding mass in grams. Molarity = mass in grams x 1 mole =. All gases have the same molar volume when measured at. Round answers to the nearest hundredth (or 2 non-zero numbers). 1) 52 g of NaCl ANSWER: 0. 00352moles= 56. MOLE WORKSHEET #2 Make the following conversions using unit analysis. Titration endpoint: The quantity of reactant in the standard solution added during the titration is stoichiometrically equivalent to the quantity of reactant in the analyte at the titration. 030 moles of a gas at STP. If we know the molecular mass of the gas, we can convert this into grams/liter (mass/volume). 2 moles of aluminum? ? atoms Al = 6. CHEMISTRY & YOU Guess how many pennies are in the container. View Homework Help - Worksheet The Mole Answer KEY (The Mole WS Answers) from CHEM SC210A at Stratford High School. 2 L of argon gas at STP? 3. The mole concept is in chemistry used to calculate the quantity or amount of chemical substances that are used and produced in a chemical reaction. Worksheet 7 - Ideal Gas Law I.