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Ch 8,9 P.Chem

QuestionAnswer
What is atomic mass of element weighted average of the mass of isotopes that compose an element
How do you find the weighted mass multiplying each mass by its factional occurance in decimal form than adding all products- the Sum is the weighted average and serves as formal atomic mass
What is Molecular mass sum of the mass of atoms in a molecule, mm of a compound is the number of grams in 1mol of molecues of that compound
What is the unit for atomic mass amu (u)
What is a mole (mol) number of things equal to the number of atoms in excalty 12g of carbon
How big is one mole 1mole of pennies=diameter of milky way , 1 mole of carbon atoms= small cube in pocket
What is the molar mass mass of 1 mole of things, atoms is mass of element of grams in mole of atoms of that element
What is empirical formula mass sum of average mass for all atoms represented in an empirical formula. the covalent component may be compared to the compounds molecular or molar mass to derive a molecular formula
What is a percent compound percent by mass of the various elements in the compound
What is stoichiomentry relating one substance to another using a balanced chemical reaction predicts what will occur and more importantly how much is produced use conversion factor from one quantity of a substance to another quanity
What is a mole fraction a way to describe the concentration of different parts ( or copmponents of a solution)
What is mole to mole calculation you start with moles of are substance convert to moles of another substance by using balanced chemical equations -reactants and products are equal to another when balanced
Created by: annabreuer
 

 



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