Empirical formula - Study guides, Class notes & Summaries
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SCIN131 Lesson 04 - Week 04 Quiz Questions with 100% Correct Answers
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Lesson 04 - Week 04 Quiz 
Return to Assessment List 
 
Part 1 of 3 -	44.0/ 52.0 Points 
 
Question 1 of 25 
4.0/ 4.0 Points 
`Eureka! I've discovered a new compound! Yay for me. I have determined that its empirical formula, but in order to determine its actual molecular formula, I need to know which of the following? 
 
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A.	the number of moles of the compound in a 1.00 g sample of the substance 
 
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B. the density of the compound 
 
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C. the boiling point and freezing poin...
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IB Chemistry SL UPDATED Exam Questions and CORRECT Answers
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relative atomic mass (Ar) - Ans weighted mean of all the naturally occurring isotopes of the 
element (g/mol) 
relative molar mass (Mr) - Ans sum of Ar (no units) 
mole - Ans 6.02x10^-23 
Empirical Formula - Ans shows the simplest whole number ratio of atoms of each element in a 
particular substance 
Molecular Formula - Ans shows the actual number of atoms of each element in a particular 
molecule or substance
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General Chemistry placement test Study Guide Latest Update Rated A+
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General Chemistry placement test Study 
 
Guide Latest Update Rated A+ 
 
molecule two nonmetal atoms combined form a covalent compound called a 
 
diatomic molecules H2,O2,F2 
 
Matter Anything that has mass and takes up space 
 
Element A substance that cannot be broken down into simpler substances 
 
Compound A pure substance made of two or more elements CHEMICALLY combined. 
 
Compound Can be decomposed by chemically 
 
Mixture A PHYSICAL blend of two or more components 
 
(aq) aqueous mixtu...
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Straighterline CHEM101 Final Exam | Latest Version | 2024/2025 | Rated A+
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Straighterline CHEM101 Final Exam | 
Latest Version | 2024/2025 | Rated A+ 
 
What is the empirical formula of a compound with the molecular formula C6H12O6? 
 CH2O 
 
How do you calculate the number of moles in 5 grams of sodium chloride (NaCl)? 
 Divide the mass of NaCl by its molar mass. 
 
Describe the difference between an ionic bond and a covalent bond. 
 
 An ionic bond involves the transfer of electrons between atoms, creating charged ions, while 
a covalent bond involves the sharing of ...
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Download this complete, and updated CCEA AS2 Chemistry definitons|GUARANTEED SUCCESS
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Empirical formula 
A formula which shows the simplest whole number ratio of atoms of each element in a compound 
 
 
 
Molecular formula 
A formula which shows the actual number of atoms of each element in a molecule 
 
 
 
 
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Molar Gas Volume 
The volume of one mole of gas under specified conditions of temperature and pressure e.g 293K and 1 atmosphere pressure 
 
 
 
Homo...
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Purdue Chem 115 - Final Exam Latest Update Graded A
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Purdue Chem 115 - Final Exam Latest Update Graded A 
 
Valence Bond Theory A model that attempts to reconcile the shapes of molecules with those of atomic orbitals through the concepts of orbital overlap and hybridization (429). 
 
hybridization a postulated process of orbital mixing to form hybrid orbitals (430). 
 
hybrid orbitals an atomic orbital postulated to form during binding by the mathematical mixing of specific combinations of nonequivalent orbitals on a given atom (430). 
 
sp hybrid...
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Chem 101 Final Exam Questions And Answers 100% Solved
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Chem 101 Final Exam Questions And 
Answers 100% Solved 
Determine the formula weight of KBr - answer119.00 amu 
Determine the mass in grams of 3.00 x 10^21 atoms of arsenic. (The mass of one mole of arsenic 
is 74.92 g.) - answer0.373 g 
Fill in the blank: A mole is defined as the number of carbon atoms in _____ g of pure ^12C. - 
answer12 
How many atoms are in 1.2 mol of carbon? - answer7.2264 x 10^23 
Which one of the following contains the most moles of oxygen atoms? 
A) 1 mol of Fe(C2H3O2)3...
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Clemson Chem 1010 Exam 3 with complete verified solutions(GUARANTEED SUCCESS)
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Stoichiometry 
the mole ratios among the reactants and products in a chemical reaction 
 
 
 
chemical equation 
a description of the identities and proportions of reactants and proucts 
 
 
 
 
reactants 
substances consumed during a chemical reaction 
 
 
 
products 
substances formed during a chemical reaction 
 
 
 
molecular mass 
the mass in amu of one molecule of a molecular compound 
 
 
 
molar mass 
the mass of one mole of a substance 
 
 
 
formula mass 
mass in amu of one formula uni...
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CHEM 210 EXAMS 1-8 AND FINAL EXAM REVIEW
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functional group is an alcohol. 
 
 
 
 
 
True Correct! 
False Question 4 
3 / 3 pts 
 
True or False: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting macromolecules. 
 
True Correct! 
False Question 5 
3 / 3 pts 
True or False: Carbon dioxide has a linear molecular shape AND has a bond angle of 109.5o. 
 
True Correct! 
False Question 6 
3 / 3 pts 
Of the following,	is not a property of carbon. forming covalent bonds 
triple bond formation Correct! 
 
po...
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Chem 101 Final Exam Questions And Answers 100% Solved
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Chem 101 Final Exam Questions And 
Answers 100% Solved 
Determine the formula weight of KBr - answer119.00 amu 
Determine the mass in grams of 3.00 x 10^21 atoms of arsenic. (The mass of one mole of arsenic 
is 74.92 g.) - answer0.373 g 
Fill in the blank: A mole is defined as the number of carbon atoms in _____ g of pure ^12C. - 
answer12 
How many atoms are in 1.2 mol of carbon? - answer7.2264 x 10^23 
Which one of the following contains the most moles of oxygen atoms? 
A) 1 mol of Fe(C2H3O2)3...
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