Avogadro’s number - Study guides, Class notes & Summaries
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CHEM 161 EXAM 2 Questions with complete Answers Rated A+
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actual yield 
the experimental quantity, in grams, of product obtained in a 
reaction. 
Avogadro’s number 
the number of particles (6.022 x 10^23) of a substance in 1 mol of 
that substance. By definition, Avogadro’s number is equal to the 
number of carbon-12 atoms in exactly 12.00 g of carbon-12
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General Chemistry 1 Midterm 1 | Latest Version | 2024/2025 | 100% Verified
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General Chemistry 1 Midterm 1 | Latest 
Version | 2024/2025 | 100% Verified 
 
What is the difference between an element and a compound in terms of their chemical 
composition? 
 An element is a pure substance consisting of only one type of atom, whereas a compound is 
a substance composed of two or more different types of atoms chemically bonded together. 
 
How do you determine the molecular weight of a compound from its chemical formula? 
 The molecular weight of a compound is determined by s...
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General Chemistry Chapter 1 and 2 Test | Latest Update | 2024/2025 | Already Passed
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General Chemistry Chapter 1 and 2 Test | 
Latest Update | 2024/2025 | Already 
 
Passed 
 
What are the main characteristics of matter in terms of its states? 
 
 The main states of matter are solid, liquid, and gas. Solids have a definite shape and volume, 
liquids have a definite volume but take the shape of their container, and gases have neither 
definite shape nor volume, expanding to fill their container. 
 
How do you convert between different units of measurement for volume, such as lite...
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CHEM 161 EXAM 2 2024/25; Questions and Answers 100% Solved
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CHEM 161 EXAM 2 2024/25; Questions and 
Answers 100% Solved 
actual yield 
the experimental quantity, in grams, of product obtained in a 
reaction. 
Avogadro’s number 
the number of particles (6.022 x 10^23) of a substance in 1 mol of 
that substance. By definition, Avogadro’s number is equal to the 
number of carbon-12 atoms in exactly 12.00 g of carbon-12. 
balanced
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CHEM 120 Week 3 Virtual Lab; Stoichiometric Calculations Part I, Part II
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Learning Objectives: 
•	Explain the relationship between mass, molecular weight, and numbers of atoms or molecules and perform calculations deriving these quantities from one another 
•	Perform mass-to-mass stoichiometric calculations via conversions to moles 
•	Identify the limiting and excess reagents in a chemical reaction 
•	Calculate the theoretical, actual and percent reaction yield 
•	Define Avogadro’s number and describe the mole quantification of matter
And that's how you make extra money
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CHEM120 INTRODUCTION TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY 2024| LAB REPORT FOR WEEK 3 SCORED A+
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CHEM120 INTRODUCTION TO GENERAL, ORGANIC & 
BIOLOGICAL CHEMISTRY 2024| LAB REPORT FOR 
WEEK 3 SCORED A+ 
OL Lab 3: Stoichiometry: Avogadro’s number and molecular 
calculations / Solution Preparation: From salt to solution 
Learning Objectives: 
• Explain the relationship between mass, molecular weight, and numbers of atoms 
or molecules and perform calculations deriving these quantities from one another 
• Perform mass-to-mass stoichiometric calculations via conversions to moles 
• Ident...
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Chem 161 Lecture 3 questions with complete Answers 2023 UPDATE RATED A+
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What is a mole? 
number of atoms that has a mass equal to the AMU in grams 
What is Avogadro’s number? 
6.022 x 10^23 atoms/mole 
What is wavelength? 
distance between each wave unit λ
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Chem 161 Lecture 3 Answers 2023 UPDATE RATED A+
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Chem 161 Lecture 3 
Answers 2023 UPDATE 
RATED A+ 
What is a mole? 
number of atoms that has a mass equal to the AMU in grams 
What is Avogadro’s number? 
6.022 x 10^23 atoms/mole 
What is wavelength? 
distance between each wave unit λ 
What is frequency? 
# of waves (cycles) per second 
What are units of wavelength? 
m, mm, nm (length of each λ) 
What are units of v? 
cycles/sec waves/sec sec^-1 Hz (heartz) 
What is the velocity of the wave? 
λ * v = velocity of wave (meter/wave) * (wave/s...
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TEST BANK FOR QUANTITATIVE CHEMICAL ANALYSIS 10TH EDITION
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TEST BANK FOR QUANTITATIVE CHEMICAL ANALYSIS 10TH EDITION 
 1. Which constant is NOT used to define the fundamental SI units? 
a. Avogadro’s number 
b. speed of light in vacuum 
c. elementary charge 
d. Planck’s constant 
e. π 
 2. A satellite in low Earth orbit with a circular orbit has an orbital speed of 7.3 km/s relative to the Earth’s 
surface. Calculate the satellite’s speed in miles per hour. (1 mi = 1.609 km) 
a. 1.6 × 104 
 mi/h 
b. 1.3 × 10−3 mi/h 
c. 4.2 × 10...
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CHE 101 Lab 7: Estimating Avogadro’s Number. Complete Solution
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CHE 101 Lab 7: Estimating Avogadro’s Number. Complete Solution.Purpose: The purpose of this lab is to learn how to use Avogadro’s Number to estimate the number of atoms, knowing the mass and volume of an object. 
 
 
Pre-laboratory Questions 
1.	The stearic acid/hexane solution contains 0.1 g of stearic acid per 1 mL of solution. What is the molarity of this solution? 
 
Stearic acid’s molecular mass is 284.48 g/mol. The number of moles in 1 mL solution is 0.1g /284.48 g/mol = 0. mol. 
Mol...
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