Chemistry

dilution is a process where solvent is added to a solution in order to change the concentration while keeping the amount of solute constant. which equation below describes this scenario?c1v1=c2v2c2v1=c1v2c1c2=v1v2none of the above
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an oxidation reaction is defined as having a(n) in oxidation the correct answer below:increasedecreasesteady risefluctuation
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What is the hybridization of the central atom in the sulfur pentafluoryl SF5+ cation?
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Consider a bond between carbon and generic element Z (CZ). Changing atom Z from bromine to chlorine would result in what change to the wavenumber of absorption of the CZ bond?The wavenumber would increase.The wavenumber would not change.It is not possible to determine.The wavenumber would decrease.
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for each of the pairs given, predict which acid is stronger i) h2s and h2se ii) hbro2 and hbro3 iii) h2seo3 and hbro3
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What volume of 3.0 M KOH contains 2.1 g?
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a ketohexose is reduced with nabh4 in ch3oh to form a mixture of d-galactitol and d-talitol. what is the structure of the ketohexose? draw your answer as a fischer projection.
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Why are HFCs inappropriate for long-term replacement of CFCs? a. They are flammable b. They are very toxic c. They absorb infrared radiation
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To control her blood pressure, Jill's grandmother takes one half of a pill every other day. Which of the following represents about a one year supply? O 360 pills 180 pills 60 pills O 30 pills O 90 pills
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in the electrolysis of water, what happens at the anode? select the correct answer below: hydrogen is oxidized hydrogen is reduced oxygen is oxidized oxygen is reduced
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which element has the following ground state electron configuration? 1s22s22p63s23p5 select the correct answer below: cl f s ar
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Calculate the change in enthalpy of the reaction below when aqueous carbonic acid reacts with aqueous potassium hydroxide, given the following heats of formation: Carbonic acid (aq) AH'= -699.7 kJ/mol; Potassium hydroxide (aq) AH"=-115.3 kJ/mol, Potassium carbonate AH = -282.3 kJ/mol, and water AHY = -285.8 kJ/mol _H2CO3(aq) + _KOH(aq) _K.CO3(aq) + _H2O(1)
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air with a density of 10 g/m^3 is 100% saturated at 12 c. at what temperature will it reach its dew point?
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2. in a real-world experiment, the gaseous decomposition of dinitrogen pentoxide into nitrogen dioxide and oxygen has been studied in carbon tetrachloride solvent at a certain temperature. [n2o5] (m) initial rate (m/s) 0.92 9.50 x 10-6 1.23 1.20 x 10-5 1.79 1.93 x 10-5 2.00 2.00 x 10-5 2.21 2.26 x 10-5 (a) write the balanced chemical reaction for this decomposition.
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what is the total number of valence electrons in an ammonium ion, nh4 ?
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explain in terms of le chatelier principle why increasing the concentration of h increases the concentration of latic acid
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suppose a student repeats the experiment, but adds 25 g of sodium bicarbonate to the 6 m hcl solution instead of adding 1 m naoh. what observations indicate that a reaction took place?
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How many moles of carbon monoxide react with 1 mole of oxygen gas according to the balanced chemical equation?2 CO + O2(g) = 2 CO2a. 1 molb. 2 molc. 3 mold. 4 mole. none of the above
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Complete the equation below for the neutralization reaction by writing the formula ofeach productKOH(aq) + HCl(aq)->______ + ______
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the least polar of the following molecules is group of answer choices a) ch2cl2 b) ccl4 c) ch3cl d) cocl2 e) ncl3
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What is the molality of a solution containing 11.5 g of ethylene glycol dissolved in 145 g of water. Note: ethylene glycol = C2H602 a. 0.0342 m b. 0.222 m c. 1.28 m d. 1.85 m
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state the number of sets of equivalent hydrogens in each compound and the number of hydrogens in each set. (a) 3-methylpentane (b) 2,2,4-trimethylpentane
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choose the molecule or compound that exhibits dispersion forces as its strongest intermolecular force a. nh3 b. ch4 c. s2 d. cf4
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why could you see the agno3 diffusing out from the center well, but not the nacl diffusing from the peripheral wells?
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