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2-4-4 Posted by: drglennlo
Video duration: 204 seconds Which of the following is the ground state electron configuration of Al? A. [Ne] 3s2 3p1 B. [He] 2s2 2p6 3s2 3p1 C. [Mg] 3p1 D. all of the above Related: 2-4-4, chemistry, configuration, core, electron, gas, noble |
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2-6-6 Posted by: drglennlo
Video duration: 190 seconds QUESTION: The decreasing trend in ionization energy going down a group is, is due to... A. Increasing repulsions among electrons in the valence shell B. Increasing effective nuclear charge C. Decreasing number of core electrons D. Increasing size of valence shell Related: 2-6-6, chemistry, decreasing, effect, energy, group, ionization, shielding, trend |
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2-4-ALD Posted by: drglennlo
Video duration: 503 seconds Choose the electron configuration that corresponds to an excited state for the K atom. A. 1s22s22p63s23p63d1 B. 1s22s22p63s23p64s1 C. 1s22s22p63s23p6 D. None of the above Related: chemistry, config, configuration, electron |
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Chem Q&A. Stoichiometry Posted by: drglennlo
Video duration: 155 seconds A solution containing acetic acid is mixed with calcium carbonate. How much acetic acid is consumed in a reaction which produces 0.400 mol CO2? Related: chemistry, honors, jerry, mcdonald, project, stoichiometry |
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1-6-2 Posted by: drglennlo
Video duration: 58 seconds Which of the following elements is a transition metal? A. silicon, B. lead, C. sodium, D. chromium Related: 1-6-2, chemistry, elements, metals, transition |
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2-4-JJW-1 Posted by: drglennlo
Video duration: 250 seconds What is the ground state electron configuration of Se2-? A. [Ar]4s24p4 B. [Ar]4s24p6 C. [Ar]4s23d104p4 D. [Ar]4s23d104p6 Related: 2-4-jjw-1, chemistry, configuration, electron, ground, state |
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2-7-3 Posted by: drglennlo
Video duration: 202 seconds What is the electron configuration of Fe3+? A. [Ar] 4s2 3d6 B. [Ar] 4s2 3d3 C. [Ar] 4s1 3d4 D. [Ar] 3d5 Related: 2-7-3, chemistry, configuration, electron |
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Chem Q&A: Amount of Solute Posted by: drglennlo
Video duration: 173 seconds An aqueous solution in the lab is labeled "6.00 M HC2H3O2". How many grams of acetic acid are in a 2.00 L sample of this solution? Related: aid, chem, cindy, honors, mass, molar, molarity, project, soto, study |
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3-9-ALD Posted by: drglennlo
Video duration: 206 seconds In the molecule HSF5, which atom(s) violate the octet rule? a. hydrogen b. Sulfur c. Fluorine d. both Hydrogen and Sulfur Related: chemistry, octet, rule |
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Chem Q&A: Stoichiometry Posted by: drglennlo
Video duration: 238 seconds A solution containing acetic acid is mixed with 0.600 mol CaCO3. Suppose the reaction produces 0.400 mol CO2. HOw much CaCO3 is left unreacted? Related: aid, chemistry, cindy, honors, mass, molar, project, soto, study |
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5-17-JJW Posted by: drglennlo
Video duration: 177 seconds What mass of silver chloride will be formed if 50.0 mL of 0.750 molar silver nitrate is mixed with 70.0 mL of 0.500 molar sodium chloride? A. 2.04 g B. 5.02 g C. 5.37 g D. 6.37 g Related: chemistry, limiting, mass, molar, physical, reagent, science |
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3-2-2 Posted by: drglennlo
Video duration: 186 seconds Which pair of atoms would form a polar covalent but essentially nonpolar bond? A. N and N, B. H and C, C. Na and Cl, D. Be and I Related: 3-2-2, bond, chemistry, covalent, electronegativity, nonpolar, polar |
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3-2-ALD Posted by: drglennlo
Video duration: 247 seconds Choose the diatomic molecule/ion that would have the least polar bond. a. carbon monoxide b. hydrofluoric acid c. nitrogen d. the cyanide ion Related: bond, chemistry, polar, polarity |
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3-9-2 Posted by: drglennlo
Video duration: 167 seconds In which of the following atoms must have an octet when sharing electrons with other atoms? A. N, B. B, C. P, D. none of these Related: 3-9-2, chemistry, exceptions, octet, rule |
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5-6-JJW Posted by: drglennlo
Video duration: 213 seconds Which of the following represents a precipitation reaction? A) potassium hydroxide plus hydrogen chloride yields water and potassium chloride B) potassium chloride plus silver nitrate yields silver chloride plus potassium nitrate C) 2 potassium chlorate yields 2 potassium chloride plus 3 O 2. Related: chemistry, precipitation, rules, solubility |
