Chemistry

g a first-order reaction has a half-life of 23.1 s. how long does it take for the concentration of the reactant in the reaction to fall to one-sixteenth of its initial value?
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why is it a good idea to include reactions that contain substrate but not enzyme in your kinetic analysis?
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an aqueous potassium carbonate solution is made by dissolving 5.84 5.84 moles of k2co3 k 2 co 3 in sufficient water so that the final volume of the solution is 2.20 l 2.20 l . calculate the molarity of the k2co3 k 2 co 3 solution.
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polypropylene is made by polymerizing propene, c3h6. how many molecules of propene must be polymerized to make 3.50 g of polypropylene?
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Pls help and tell me explanation of answer
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how successful was the buffer solution in resisting ph changes when an additional amont of strong acid or a strong base was added
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Match the atomic particles with their characteristics.1. atomic mass = 42. mass of electron; positive charge3. 100 percent energy; zero mass4. mass
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co2 gas is soluble in water. what would happen to the solubility of carbon dioxide gas in water as the temperature increases?
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The smallest unit of life that can sustain itself is called an organism or an biosphere or a population
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which of the following is not a strong acid? select the correct answer below: hydrobromic acid hydroiodic acid hydrochloric acid hydrofluoric acid
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generally only the carbonates of the group 1 elements and the ammonium ion are soluble in water; most other carbonates are insoluble. how many milli- liters of 0.125 m sodium carbonate solution would be needed to precipitate the calcium ion from 37.2 ml of 0.105 m cacl2 solution?
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What type of spectrum does this represent? A. Absorption Spectrum B. Continuous Spectrum C. Emission Spectrum
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if each of vinegar, lemon juice, and lactic acid react with equal masses of baking soda, which will produce the most gas?
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The process by which hot and cold air are transferred in the atmosphere isA. radiation B. insulation C. convection D. conduction
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which of the following serve as bleaching agents? 1. dyes 2. humectants 3. cavity fluid 4. phenol 5. sodium hypochlorite
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From your balanced equation, determine the volume of hydrogen gas at standard temperature and pressure that can be produced from 3 moles of magnesium metal reacting with the acid
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how do evaporites form? choose one: a. they form as silica is evaporated out of seawater. b. they form as ions (minerals) precipitate out of an evaporating solution. c. they form as salt is deposited on the slopes of a mountain. d. they form when a body of water is evaporated and re-precipitated in a different location.
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1. a solution is made by dissolving 170.1 g of glucose (c6h12o6) in enough water to make a liter of solution. the density of the solution is 1.062 g/ml. express the concentration of the solution in
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all of these quantities except one must be zero for this constant pressure process at 300k and 1 atm. which quantity is nonzero?
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the lattice energy of a crystal is less than the energy necessary to pull the crystal apart. true false
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why must a grignard reaction be kept dry (free of water)? in addition, why must the glassware be dried in an oven prior to the experiment?
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which one of the following molecules has the highest molecular weight? group of answer choices acetyl coa alpha-ketoglutarate. oxaloacetate citrate isocitrate
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what type of fire is self-heating? diffusion flame spontaneous combustion pre-mixed flame smoldering
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cephalosporin c is an antibiotic containing multiple functional groups. which functional groups are present in this molecular? (select all that apply).
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