L18a-c_Unit_7a-3_ALL[1]

# Recall and apply the basic rules of signicant gures

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Unformatted text preview: es use the chemical equa<on to compute the maximum amount (theore<cal yield) of products produced use the chemical equa<on to compute the amount of reactants needed to produce a 100% yield compute percent yields for any chemical reac<on from actual yields and theore<cal yields. incorporate limi<ng reagent calcula<ons into all stoichiometric calcula<ons obtain the empirical formula from mass measurements and chemical reac<ons obtain molecular formulas from empirical formulas and molecular weight data calculate the average mass number from the periodic table for any element based on isotope abundance Learning Goals for these 3 videos 1.  recall and apply the basic rules of signiﬁcant ﬁgures, scien9ﬁc nota9on and rounding 2.  perform basic unit conversions for metric units or when given conversion factors 3.  re- arrange a basic algebraic expression to isolate any variable in the expression (i.e. PV=nRT) 4.  revisit balancing a chemical equa9on and use the coeﬃcients to predict the number of atoms or molecules produced or used in a chemical reac9on 5.  ar9culate what the coeﬃcients mean in terms of number of reac9ng atoms or molecules AND in terms of combining ra9os 6.  write a deﬁni9on of the mole in terms of a ﬁxed number of par9cles – Every mole contains _?__ par9cles. (Av#) 7.  recall the number of par9cles from gases and think of this as a ﬁxed unit 8.  scale up the coeﬃcients to realize that they can refer to the number of atoms and molecules or even to the number of mol...
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