| Nomenclature | Stoichiometry | Conversions | Equations | Miscellaneous |
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Molecular or Covalent
When naming a(n) _____ compound, we use prefixes to denote amount of atoms of each element & the suffix -ide for the second element.
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71 moles
How many moles are in 1.2 x 103 grams of ammonia, NH3?
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Decimal places (1) and Significant Figures (2)
When adding/subtracting, report answer to the least number of _____.
When multiplying/dividing, report answer to the least number of____. |
1, 6, 3, 2
Fe2(SO4)3 + 6KOH → 3K2SO4 + 2Fe(OH)3
Balance the following equation:
Fe2(SO4)3 + KOH → K2SO4 + Fe(OH)3 (Numbers are subscripts.) |
Intensive
Properties that are the same regardless of sample size like density and melting point are considered (intensive/extensive).
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Charge; Ionic
Roman numerals are used to denote the _____ of the cation in ____ compounds.
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42.3 mol O2
How many moles of oxygen are required to combust 84.6 mol of hydrogen?
2H2 (g) + O2 (g)-->2H2O (l) |
5.200×10^−6 m
How many meters are in 5.200 μm? Use proper significant figures.
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63.55 u
Calculate the atomic mass of copper, given that naturally occurring copper consists of 69.17% 63Cu, which has an isotope mass of 62.9396 u, and 30.83% 65Cu, which has an isotope mass of 64.9278 u.
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D. 1.00, 1.05, 1.01, and 0.98
Accuracy-closeness to true value Precision-closeness of values to each other
Which of the following data sets is the most accurate AND precise if the true value is 1.00?
A. 1.01, 1.85, 2.13, and 2.00 B. 1.50, 1.51, 1.55, and 1.58 C. 0.80, 0.90, 1.10, and 1.20 D. 1.00, 1.05, 1.01, and 0.98 |
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A. AlN
Which of the following is Aluminum Nitride?
A.AlN B.Al3N3 C.Al(NO3)3 D.Al(NO3) |
3.45 x 10^-24 kg Ne
How many kilograms of Ne gas are there if there are 104 atoms of Ne?
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6.83x10^-5 m^3
Convert 68.3 cm^3 to cubic meters. Use proper significant figures.
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P2O5
Determine the empirical formula of a compound that has a percent composition of 43.7% P and 56.3% O.
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310 K
What is 98.6°F (normal body temperature) on the Celsius scale?
C=5/9(F−32) |
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Nitric Acid
When naming Oxyacids, an anion with the suffix -ate is replaced with -ic and an anion with the suffix -ite is replaced with -ous. What is the name of the acid HNO3?
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Ca is the limiting reagent.
2Ca(s) + O2(g) → 2CaO
Consider the reaction above. If 60g of Ca is placed in a reaction chamber with 32g of O2 which will be the limiting reactant? |
4.00x10^4nL
Convert 40.0 μL to nL. Use proper significant figures.
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C2H4O2
An unknown compound is found to contain 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen with a molecular mass of 60.0 g/mol. What is the molecular formula of the unknown compound?
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C: 57.14%, H: 6.12%, N: 9.52%, O: 27.21%
What is the percent composition by mass of each of the elements in aspartame (C14H18N2O5)?
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(NH4)3PO4
If ammonium ions are combined with phosphate ions, what is the formula of the resulting compound that is formed?
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a. oxygen gas is the limiting reactant
b.121 mol C3H8 is leftover
Daily Double: If we have .336 mol C3H8, and 1.075 mol of oxygen, what is a) the limiting reagent and b) the moles of excess reagent left over after the reaction:
C3H8+5O2-->3CO2 + 4H2O |
0.811 g/mL
Calculate the density of a piece of wood in a certain desk if its mass is 41.6 kg and its volume is 51.3 L. Give your answer in g/mL in the correct number of significant figures.
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94.9%
2KClO3(s)→2KCl(s)+3O2(g)
In a certain experiment, 40.0g KClO3 is heated until it completely decomposes. Calculate the percent yield of oxygen gas if 14.9 g of oxygen gas is experimentally formed. |
H2SO4 is the limiting reactant
What is the limiting reagent when14.4 g NaHCO3 in aqueous solution is added to an aqueous solution containing 4.90 g H2SO4?
H2SO4(aq) + 2 NaHCO3(aq) → Na2SO4(aq) + 2 H2O(l) + 2 CO2(g) |
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