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80 Cards in this Set
- Front
- Back
- 3rd side (hint)
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complete the following sentence. A hypothesis is
A. a tentative explanation for a set of observations that can be tested B. a statement describing a relationship between phenomena that is always the same under the same conditions C. a unifying principle that explains a body of facts and relations D. a model used to visualize the invisible |
A
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choose the response that includes all the items listed below that are pure substances.
i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup A. i, iii, v B. ii, iv C. i, iii, iv D. all are pure substances |
B
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which one of the following is an example of a physical property?
A. dynamite explodes B. meat decays if it is not refrigerated C. gasoline burns D. ice floats on top of liqiud water E. a silver platter tarnishes |
D
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all of the following are properties of tin. which one is a chemical property of tin?
A. tin can be hammered into a thin sheet B. tin melts at 231.9C C. tin erodes when added to hydrochloric acid, and a clear gas forms D. at -40C a sheet of tin crumbles to a gray powder E. when a bar of tin is bent, it emits an audible "cry" |
C
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one of the following does not describe gases. which one is it?
A. expands infinitely B. rigid shape C. easily compressed D. relatively low densities E. particles far apart |
B
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which of the following is not a mixture?
A. air B. steel C. seawater D. gasoline E. oxygen |
E
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crude oil can be separated into gasoline, dieasel, heating oil, etc. by differences in boiling points. the form of matter which would best describe crude oil is:
A. homogeneous mixture B. heterogeneous mixture C. compound D. mineral E. element |
A
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which of the following is a compound?
A. cola B. air C. mercury D. gasoline E. calcium fluoride |
E
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which mixture is incorrectly labeled?
A. homogeneous - sugar dissolved in water B. homogeneous - sand stirred into water C. heterogeneous - orange juice with pulp D. heterogeneous - chocolate chip cookie E. heterogeneous - bauxite ( an aluminum ore) |
B
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below is a list of physical properties and the fundamental unit used in the SI system to measure each. which unit is not the correct fundamental unit for the property?
physical property unit A. length meter B. time second C. mass gram D. temperature kelvin E. electric current ampere |
C
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which of the following is equivalent to 10cm?
A. 1 m B. 0.1 dm C. 100 mm D. 1000 um E. 1 mm |
C
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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how many millimeters are there in 25 feet.
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7620
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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convert 175 milliliters to gallons.
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0.05 gal
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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what is the mass, in grams, of a 16.0 lb bowling ball?
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7257.6g
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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which of the following is not an intensive property of matter?
A. color B. density C. melting point D. weight E. boiling point |
D
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the mileage rating of an automobile that is 12 kilometers per liter could also be expressed as _____ miles per gallon.
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28.22 mi/gal
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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a cube of metal is 1.42 centimeters on an edge. its mass is 16.3 grams. what is its density?
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5.70 g/cm^3
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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the density of mercury is 13.6 g/cm^3. what is the mass of 6.50 cm^3 of mercury?
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88.4g
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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a gold ring has a mass of 15.37g. if this ring is pure gold (density = 16.1g/mL), what would the volume of the ring be?
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0.95mL
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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the freezing point of argon is - 189C. what is its freezing point on the absolute temperature scale?
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84.15K
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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methane, CH4, boils at -162C. what is the boiling point of methane in degrees F?
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-259.6F
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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the freezing point of the noble gas, argon, is -308F. what is this temperature in kelvin?
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84.26K
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conversion factors
1 in= 2.54 cm 1mi = 5280 ft 1lb = 453.6g 1L=1.057 qts 1 cal = 4.184J 1hp = 746 W 1 N = 0.2248 lb 1A= 1 x 10^-8 cm |
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heptane melts at 182 K, and it boils at 371K. which statement below is incorrect?
A. heptane will be a liquid at room temperature. B. the melting point of heptane is -132F C. the melting point of heptane is lower than the melting point of water D. heptane would be a solid in a 200K room E. heptane would be a solit at 100K |
D
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which one of the following demonstrates that a substance is a pure element?
A. it cannot be separated into simpler substances by physical or chemical methods B. it cannot be separated into simpler substances by physical methods, but it can be separated into simpler substances by chemical methods. C. it can be separated into simpler substances by physical methods D. heating the substance causes it to melt, then to boil |
A
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there are two different common crystalline forms of carbon - diamond and graphite. A less common form call fullerene, C60, also exists. Different forms of the same element in the same phhysical state are called:
A. isotopes B. isomers C. alloforms D. allotropes E. stuctural formulas |
D
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How many atoms are in a sulfuric acid (H2SO4) molecule?
A. 1 B. 7 C. 5 D. 6 E. 8 |
B
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each response below lists an ion by name and by chemical symbol or formula. also each ion is classified as moatomic or polyatomic and as a cation or anion. Which response contains an error?
A. phosphate PO4^3- polyatomic anion B. sulfite SO3^2- polyatomic anion C. nitrite NO3^- polyatomic anion D. iron (II) Fe^2+ monatomic cation E. bromide Br^- monatomic anion |
C
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calculate the percent by mass of nitrogen in ammonium carbonate, (NH4)2CO3.
A. 14.5% B. 27.8% C. 29.2% D. 33.3% E. 17.1% |
C
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calculate the percent composition of K2CO3.
A. %K=58.2% %C=17.9% %O=23.9% B. %K=28.2% %C=8.8% %O=35.9% C. %K=56.6% %C=8.7% %O=34.7 D. %K=39.4% %C=12.0% %O=48.4% E. %K=35.1% %C21.6% %O=43.2% |
C
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locate neon, Ne, on a periodic table. what is the atomic mass of neon?
A. 10g B. 10.18g C. 18g D. 20.18g |
D
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dalton's atomic theory included all of the idea listed below except:
A. atoms cannot be created or destroyed B. an element is composed of very small particles called protons, neutrons and electron. C. all atoms of a given element have identical properties. D. all atoms of a given element have properties that differ from those of other elements. E. compounds are formed when atoms of different elements combine with one another in small whole number ratios |
B
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atoms consist of three fundamental particles. What are these particles and their charges?
A. proton (1+), neutron (neutral) and electron (1-) B. proton (1-), neutron (1+) and electron (neutral) C. Proton (1+), neutron (1-) and electron ( neutral) D. proton (neutral), neutron (1+), and electron (1-) |
A
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balance the following equation with the smallest whole number coefficients. what is the coefficient for H20 in the balanced equation?
AlOH + HCl --> AlCl + H2O A. 1 B.2 C.3 D.14 E.5 |
C
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which of the following has a negative charge?
A. nucleus B. neutron C. proton D. electron E. alpha particle |
D
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which statement about the three fundamental particles is false?
A. the charge of a proton is equal in magnitude but opposite in sign to the charge of an electron B. the mass of an electron or a neutron is very small compared to the mass of a proton. C. knowledge of the function of these fundamental particles is essential to understanding chemical reactions. D. atoms consist primarily of protons, neutrons and electrons E. the fundamental particles are the basic building blocks of atoms. |
B
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according to the periodic law the properties of elements repeat at regular intervals when the elements are arranged in order of
A. their increasing atomic mass B. their increasing atomic size C. their increasing number of neutrons in the nucleus D. their increasing number of isotopes E. their increasing number of protons in the nucleus |
E
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an anion is defined as
A. a charged atom or group of atoms with a net negative charge B. a stable atom C. an atom or group of atoms with a net positive charge D. a group of stable atoms |
A
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how many neutrons are there in an atom of uranium whose mass number is 235?
A. 92 B. 143 C. 235 D. 238 E. 327 |
B
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an atom of the isotope chlorine -37 consists of how many protons, neutrons, and electrons?
A. 17p, 18.45n, 17e B. 17p, 20n, 7e C. 17p, 20n, 17e D. 17p, 37n, 17e E. 20p, 17n, 20e |
C
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two isotopes of an element differ in their
A. symbol B. atomic number C. atomic mass D. number of protons E. number of electrons |
C
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how many atoms are in one molecule of C6H12O6?
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24
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define an organic molecule.
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must have carbon, hydrogen, and oxygen
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explain the difference between a structural and molecular formula of a compound.
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answer on number 19 in test 2
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list the diatomic molecules.
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H, N, O, F, Cl, Br, I
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what is the name for elements to these right of the elements: B, Si, As, Sb, and Po?
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nonmentals
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what is the name elements to the left of the elements: B, Si, As, Sb, Te, and Po?
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metals
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name the only metal that is liquid at room temp.
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mercury Hg
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who developed the periodic table that we now use?
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mosley
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who developed the first periodic table?
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mendeleev
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what was the first table based upon?
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atomic mass
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what is the table that we now use based on?
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atomic number
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the general name for columns
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family
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what do numbers at beginning of rows represent
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energy levels
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the general name for rows
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period
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collectively name these elements: B, Si, As, Sb, Te, and Po
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metalliods
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name for column 8a
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noble gases
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name for column 2a
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alkaline earth metals
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name column 7a
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halogens
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what is the name for culumn1a
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alkali metals
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general name for 1a and 2a
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s block
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what are the names for the b elements
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d block, and transition element
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what is the name of the a columns
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representative elements
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name the sections on the bottom of the periodic table
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f block, and innertransition elements
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name the section of 3a - 8a
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p block
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state five reasons why the actual and theoretical yields are not the same amount.
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human error
mechanical error some reactions do not react all the way filtration - some solids pass through the filter side or compeating reactions |
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which would be the lesser of the two amounts... actual or theoretical yield
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actual yield
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ammonia is a principal nitrogen fertilizer. it is prepared by the reaction between hydrogen and nitrogen. 3H2 + N2 --> 2NH3. if 7.8g N2 is reacted with an excess of H2 how many grams of NH3 are produced?
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9.49g NH3
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the combustion of butane, C4H10 occurs as follows: 2C4H10 + 1302 --> 8CO2 + 10H2O. if moles of C4H10 reacts with excess O2, how many moles of CO2 are formed?
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24 mol CO2
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how many grams of CO2 are formed if 8 moles of C4H10 are reacted in the equation above?
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1408.32gCO2
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Write the electron configuration and orbital notation for Pb.
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answer is in test ch. 3
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what is the formula for % yield
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%yield=Actual/Theoretical X 100%
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a mathmatical number to show how much of a substance is poosible
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theoretical yield
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the reactant that is used up first
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limiting reactant
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the reactant that has more than what is needed for the problem
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excess reactant
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a method to show how much of one substance or compound you can make from another substance or compound
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stoichiometry
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the actual number to show how much of a substance actually produced. this is not mathmatical it is found in labs
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actual yield
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the uantitative study of reactants and products in a chemical reaction
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stoichiometry
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the amount of product that would result if all the limiting ragent reacted
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theoretical yield
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the amount of product actually obtained from a reaction
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actual yield
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the actual number of atoms in 12g of carbon-12
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avogadro's number
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