Chemistry

In which phase of a substance do its particles have the greatest average kinetic energy?
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4. A burning candle is an example of a chemical reaction taking place. What ican be inferred about this reaction? Choose the correct answer."A.Mass is not conserved.B. The reaction absorbs energy. C.The reaction releases energyD.There are reactants but no products,
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How much K2Cr2O7 is needed to create a saturated solution in 400 grams of water at 50oC?
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Identify 5 things that would happen if there is not electricity.
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What is the primary function of decomposers in an ecosystem?
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How is gold related to suns life cycle?
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Lewisite (2-chloroethenyldichloroarsine) was once manufactured as a chemical weapon, acting as a lung irritant and a blistering agent. During World War II, British biochemists developed an antidote which came to be known as British anti-Lewisite (BAL) (2,3-disulfanylpropan-1-ol). Today, BAL is used medically to treat toxic metal poisoning. Complete the reaction between Lewisite and BAL by giving the structure of the organic product and indicating the coefficient for the number of moles of HCl produced in the reaction.
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What does X represent for this transmutation?96242Cm+X98245Cf+01n gamma +10e 24He 10e
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What is the pH of a 1.4 M pyridine solution that has Kb = 1.7 10-9? The equation for the dissociation of pyridine is C5H5N(aq) + H2O(l) C5H5NH+(aq) + OH-(aq). What is the pH of a 1.4 M pyridine solution that has Kb = 1.7 10-9? The equation for the dissociation of pyridine is C5H5N(aq) + H2O(l) C5H5NH+(aq) + OH-(aq). 4.31 9.69 8.72 10.69
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On May 3, Zirbal Corporation purchased 4,500 shares of its own stock for $36,000 cash. On November 4, Zirbal reissued 800 shares of this treasury stock for $7,200. Prepare the May 3 and November 4 journal entries to record Zirbal's purchase and reissuance of treasury stock.
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Na2O+H2O= 2NaOH how many grams of Na2O are required to produce 1.06*10^2 grams of NaOH
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Which of these structures are found in plant cells but not animal cells? A. Gogi apparatusB. mitochondriaC. lysosomesD. cell wall
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Given the partial equation: MnO4+ SO32 Mn2++ SO42, balance the reaction in acidic solution using the half-reaction method and fill in the coefficients. The missing blanks represent H2O, H+, or OH-, as required to balance the reaction. Enter the coefficients as integers, using the lowest whole numbers. If the coefficient for something is "1", make sure to type that in and not leave it blank. Enter only the coefficients.
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a hot liquid located under earth's surface?
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The diameter of a circular swimming pool is 12 feet. Find circumference Round to the nearest tenth . Use 3.14 for pi
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Considering the limiting reactant, what is the mass of zinc sulfide produced from 0.250 g of zinc and 0.750 g of sulfur? Zn(s)+S(S) ZnS(s)
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The addition of heat causes the individual particles of a solid to
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Over long periods of time, some species have become extinct, while new species havedescended from earlier species. These changes are known as:EvolutionMutationNatural selectionAdaption
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Image by e2020In the diagram, the lines dividing the parking spaces are parallel. What must be true about 1 and 22? What theoremsupports your conclusion?A. 21 and 22 are supplementary; alternate exterior angles theoremB. 21 22; alternate exterior angles theoremC. 21 and 22 are supplementary; consecutive exterior angles theoremD. Z1 Z2; consecutive exterior angles theoremMark this and returnSave and ExitNextSubmit
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A loud classroom demonstration involves igniting a hydrogen-filled balloon. The hydrogen within the balloon reacts explosively with oxygen in the air to form water. If the balloon is filled with a mixture of hydrogen and oxygen, the explosion is even louder than if the balloon is only filled with hydrogen. The intensity of the explosion depends on the relative amounts of oxygen and hydrogen within the balloon. Look below at the molecular views representing different amounts of hydrogen and oxygen in four different balloons. Based on the balanced chemical equation, which balloon will make the LOUDEST explosion and why?
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How can the motion of atoms in the solid state of most substances be described?
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In the modern periodic table, elements are arranged in orderbased on the number of in the nuclei of their atoms.
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A crystal of table salt (NaCl) is dissolved in water. Which of the following statements explains why the dissolved salt does not recrystallize as long as the temperature and the amount of water stay constant?
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Where do diamonds come from?
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