Chemistry

determine the reagents needed and the synthetic intermediate for the conversion of the given primary amine into the secondary amine.
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What type of heat transfer is demonstrated in Part 1?How long did it take for the butter to melt off of the plastic fork? The metal fork?How do explain the difference in time between the two forks?What type of heat transfer is demonstrated in Part 2?What happened when the warm water bottle was placed over the cold water bottle? Why?What happened when the cold water bottle was placed over the warm water bottle? Why?
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a sample of xe takes 75 seconds to effuse out of a container. an unknown gas takes 37 seconds to effuse out of the identical container under identical conditions. what is the most likely identity of the unknown gas?
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which is the correct formula for copper(ii) phosphate? group of answer choices cu2po4 cu(po4)2 cu2po3 cu3(po4)2 cu(po3)2
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what is the major ion in seawater? responses sodium sodium magnesium magnesium sulfate sulfate chloride
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sodium hydroxide reacts with phosphoric acid to produce sodium phosphate and water how many moles of water are formed when you begin the reaction with 4.30 g of sodium hydroxide
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nacl crystallizes in a cubic unit cell with cl- ions on each corner and each face. how many na and cl- ions are in each unit cell of nacl?
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Calculate the decrease in temperature when 6.0 L at 21.0 C is compressed to 3.0 L.
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liquid hexane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . what is the theoretical yield of carbon dioxide formed from the reaction of of 2.6 ghexane and of oxygen gas?
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1. What particles determine the mass number? 2. Why is mass number always a whole number?3. One isotope of carbon (C) has exactly the same mass number and atomic mass since it was used as the definition of the atomic mass unit (amu). Which isotope is it and what is its atomic mass? 4. What is the approximate mass of one proton? __________amu5. What is the approximate mass of one neutron? __________amu
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order: 1/3 strength. ensure 900 ml by ng tube over 8 hours. how many mls of water will you add to ensure 900 ml of 1/3 strength? quizlate
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conformational or shape change that enzymes undergo when reactant molecules bind to the active site CALLED
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how many grams of neutral red would your ia have to use to create 100ml of a 4% w/v stock solution? ____ gm
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At this point, you should have some idea of how a strong acid behaves in solution once it dissolves. Choose all that apply as they relate to a strong acid.Group of answer choicesA strong acid dissociates completely in solution to produce its conjugateThe conjugate of a strong acid is basic in solutionThe conjugate of a strong acid is neutral in pH when in solutionThe conjugate of a strong acid is an anionThe conjugate of a strong acid is a cationA strong acid dissociates partially in solution to produce its conjugate
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the natural cements that hold clasts together precipitate in the empty pore spaces after compaction. those precipitates come from
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A sample of oxygen gas occupies 1. 9l at pressure of 1156 torr,what volume will it occupy when the pressure is changed tp912 torrand temparature remains constant?
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g what is the iupac name for the following compound? a. 2-bromobutanal b. 3-bromobutanone c. 2-bromobutanone d. 3-bromobutanal
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Plese help im strugging and im d***How many moles of aluminum chloride ALCL3 for when 81 g AL reacts with plenty of chlorine? (AI: 27 g/mol) 2AI + 3CI2 ---> 2AICI3
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what must be true of a spontaneous process? a) enthalpy must increase. b) there will be a flow of heat. c) entropy of the universe increases. d) entropy of the system increases. e) entropy of the surroundings increases.
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the ammonium ion has the formula nh4 . how many nonbonding electrons must be shown in the lewis structure of the ammonium ion?
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___________________ is a property that can be observed in a substance? (multiple answers)A magnetismB textureC color D odor
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what is the ph of an aqueous solution that is made by mixing 200 ml of 0.20m nah2po4 and 200 ml of 0.60m na2hpo4 at 25oc?
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calculate the number of moles of sodium hydroxide present in a 26.80 ml sample of a 0.315 m solution.
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Indicate the electron pair geometry and the molecular geometry for each of the six compounds.Compound Electron pair geometry Molecular geometrya) A sulfur atom is double bonded to an oxygen atom on the left and the right, and has a lone pair. Each oxygen atom has two lone pairs.b) A sulfur atom is bonded to a chlorine atom on the left and the right, and has two lone pairs. Each chlorine atom has three lone pairs.tetrahedralc) A beryllium atom is bonded to two chlorine atoms 180 degrees apart. Each chlorine atom has three lone pairs.d)A phosphorous atom is bonded to a fluorine atom on the left, the right, and the bottom, and has one lone pair. Each fluorine atom has three lone pairs.e)A boron atom is bonded to a fluorine atom on the left, the right, and the bottom. Each fluorine atom has three lone pairs.f)A carbon atom is bonded to a hydrogen atom on the left, the right, the top, and the bottom.
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