Chemistry Final Cards – Flashcards
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The outside Temperature is 35•C. What is the Temperature in K?
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308 K
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Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.
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12.4 g/mL
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Round off 00507506 to for significant figures.
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5.075 X 10^5
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The width, length, and height of a large custom made some crate are 1.32 m, 2.50 m, and 0.83 m, respectively. The volume of the box using the correct number of significant figures is _________ m^3
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2.7
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5.621 lb = _____grams. (1 lb = 454 g)
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2550 X 10^3
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How many cm^3 are contained in 5.83 X 10^6 mm^3?
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5.83 x 10^3 cm^3
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Which of the following does NOT describe a non-metal?
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Nonmetals are generally unreactive
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Predict the charge that an ion formed from nitrogen would have.
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3-
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Calculate the atomic mass of gallium if gallium has 2 naturally occurring isotopes with the following masses and natural abundances: Ga-69 68.9256 amu 60.11%, Ga-71 70.9247 amu 39.89%
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69.72 amu
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Which of the following contains the fewest atoms? You shouldn't need to do a calculation here.
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10.0 g Cs
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Which of the glowing is equal to exactly Avagadro's number of atoms?
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12.01 grams of Carbon
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A covalent bond is best described as
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The sharing of electrons between atoms
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Give possible molecular formula for the empirical formula of c3h5clO
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C6H10Cl2O2
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Give the name for TiCO3. Remember that titanium forms several ions.
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Titanium (II) carbonate
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Give the name for KMnO4
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Potassium permanganate
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Write the formula for copper (II) sulfate pentahydrate.
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CuSO4•5H2O
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Calculate the molar massif Al(C2H3O2)3.
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204.13 g/mol
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How many molecules of N2O4 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol.
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4.99 x 10^23 N2O4 molecules
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Calculate the mass percent of Sulfur in Al2(SO4)3
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28.12%
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Determine the volume of Hexane that contains 5.33x10^22 molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol.
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11.6 mL
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Determine the molecular formula of a compound that has a molar mass of 92.0 g/mol and an empirical formula of NO2
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N2O4
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Write a balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfate.
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H2SO4(aq) + LiOH(aq)->H2O(l)LiSO4(aq)
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Identify the compound with covalent bonds
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CH4
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Which of the following is the correct chemical formula for a molecule of chlorine?
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Cl2
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What is the change on the Co ions in Co2O3?
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3+
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What is the stoichiometric coefficient for oxygen when the following equation is balanced using the lowest, whole-number coefficients?
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3
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Identify a hydrocarbon
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CH3CH2CH2CH3
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Balance the following equation
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13 (O2) 6 (H2O) 10 (CO2)
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Which of the following is NOT a strong electrolyte?
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MgCO3
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Which of the following is considered a STRONG electrolyte?
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NH4NO3
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Which of the following compounds is insoluble in water?
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Hg2Cl2
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What precipitate is MOST like to formed from a solution containing Ca2+, Na+, OH-, and CO3^2-
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CaCO3
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Which of the following pairs of aqueous solutions will form a precipitate when mixed?
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MgCl2+KOH
