Chemistry

Cr3+3e=Cr is that a reduction or oxidation
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Which one of the following salts, when dissolved in water, produces the solution with the highest pH?a. CsFb. KBrc. RbCld. NaI
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Identify the hybridization of the central atom in each of the following molecules and ions that contain multiple bondsa)ClNO (N is the central atom)b)CS2c)Cl2CO (C is the central atom)d)Cl2SO (S is the central atom)e)SO2F2 (S is the central atom)f)XeO2F2 (Xe is the central atom)g)ClOF2+ (C is the central atom)
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Which of the following will not show geometrical isomerism?a. [Cr(NH3)4Cl2]Clb. [Co(en)2Cl2]Clc. [Co(NH3)5NO2]Cl2d. [Pt(NH3)2Cl2]
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Understanding connections between descriptions of weak... In an aqueous solution of a certain acid the acid is 56.% dissociated and the pH is 2.02. Calculate the acid dissociation constant K of the acid. Round your answer to 2 significant digits.
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Hydrogen is used as a fuel for space ships. In this combustion reaction hydrogen and oxygencombine to form water. The Gibbs energy for this reaction is negative at 773 K.a) Define a combustion reaction. (2 points)b) List the Gibbs energy equation and explain what it means. (3 points)Determine whether this reaction is spontaneous and explain why. (3 points)please help meee im really bad at chemistry
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a sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 9.00103 m/s2m/s2 less than that at sea level.
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which is a stronger acid? one with a pkapka of 4.7 one with a pkapka of 7.0
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Helium is the second element in the Periodic table. Tin is the 50th. Suggest how tin atoms and helium atoms are different.
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the following pair has both reduced forms of electron carriers:- NADH / FAD- NAD+ / FADH2- NADH / FADH2- NAD+ / FAD
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which statements about spontaneous processes are true? select all that apply: a spontaneous process is one that occurs very quickly. a process that is spontaneous in one direction is nonspontaneous in the other direction under a given set of conditions, provided the system is not at equilibrium. a spontaneous process is one that occurs without continuous input of energy from outside the system. a process is spontaneous if it must be continuously forced or driven.
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A 0.079 g sample of an unknown metal is dropped into hydrochloric acid and reacts to produce 60.0 mL of dry hydrogen gas at 22 C and 732 mm Hg. What is the unknown metal (X)? Hint: Find the molar mass of the metal. 2X (s) + 6 HCl (aq) -----------> 2XCl3 (aq) + 3H2(g)
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Using any data you can find in the ALEKS Data resource, calculate the equilibrium constant K at 25. 0C for the following reaction. TiCl4(g)+ 2H2O(g) TiO2(s)+ 4HCl(g). Round your answer to 2 significant digits
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From the data below, determine what reaction will happen at the anode and what reaction will happen at the cathode for a 1.0 M CdBr solution. In addition, determine the minimum voltage required for the onset of the electrolysis reaction.O2(g) + 4H(aq) (10 M)+ 4e 2HO E = 0.816 V2H2O+ 2e H2(g) + 20H() (107 M) E=-0.414 VBras) + 2e2Br() E = 1.09 VCd2 (aq) +2e Cd) E = -0.403 V
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Calculate S* rxn for the following reaction. The S* for each species is shown below the reaction.C2H2(g) + 2 H2 (g) --------------> C2H6(g)S*(J/mol x K) for C2H2(g) = 200.9 , for 2H2 = 130.7, and for C2H6 = 229.2
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Calculate the mass percent byvolume of 281.1 g of glucose(C6H12O6, MM = 180.2 g/mol) in325 mL of solution.
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design a synthesis that would convert phenol primarily to ortho-bromophenol
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based on table g what is the mass of kcl that must be dissolved in 200 grams of H2O at 10 c to make a saturated solution
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which of the following is not true of reduction? group of answer choices there are fewer bonds to heteroatoms it is a decrease in oxidation number it is a gain of electrons there are fewer bonds to hydrogen atoms
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The pH of a buffer solution that is made by mixing equal volumes of 0.10 M HNO2 and 0.10 M NANO2 is Note: K for HNO2 is 7.1 x 10-4 4.67 5.50 3.15 3.19
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an additional 0.114 mol of gas is added to the balloon (at the same temperature and pressure), what will its final volume be? express your answer in liters to three significant figures.
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The voltage delivered by a primary battery is: Select the correct answer below:a. directly proportional to its sizeb. inversely proportional to its sizec. directly proportional to the square of its sized. unrelated to its size
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Which of these molecules could dissolve in water? A. BH3 B. NH3
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How many molecules of. C6H1206 are needed to produce 18 molecules of co2 A.3B.9C.12D.18
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