Chemistry

Question 9 of 16What is the reactant(s) in the chemical equation below?3CO(g)+Fe O(s) 2 {Fe}(s)+3CO(g)A. Fe O(s)B. 2 Fe(s)+3CO(g)C. 2 Fe(s)D. 3 CO(g)+Fe O(s)
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How would the system change if the container were placed on a hot plate? some kinetic energy would be produced. Some kinetic energy would be destroyed. The kinetic energy of the molecules would increase. The kinetic energy of the molecules would decrease.
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Two pieces of the same metal are placed on a table. The pieces of metal have the same density, mass, and texture. Which characteristic must be the only difference between the two samples?.
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What is the 2 4 hour rule?
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How do you calculate RMS?
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a student has 0.24 ml of 0.125 m solution of barium hydroxide, ba(oh)2. her assignment is to titrate the solution to the equivalence point with exactly 6 ml of hydrochloric acid. what molarity should the acid solution be?
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What are the products of the following reactions? (A trace amount of acid is present in each case.)A. cyclopentanone + ethylamineB. cyclopentanone + diethylamineC. acetophenone + hexylamineD. acetophenone + cyclohexylamine
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NH3 H3Ot NHA SO,2 CHCI3 Crude Sketch H H 2- H-N- H / H -O - H H- N - H CH H Calculations (# of valence electrons, # of bonds, etc. 5 + ( 1 X 3 ) 13 + 6 - 1 5+(1x4)-1 316) +2 + 6 = 8 = 8 = 26 = 8 Lewis Structure H +1 = H- O- H | H- N -H H : O' O: # electron groups, electron group geometry # of bonded atoms, molecular shape Resonance structures (if any) Polar or nonpolar
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What are the 4 types of parabola?
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In the periodic table, hydrogen is placed in group 1a, while helium is placed in group 8a. The best explanation for this is that hydrogen choose. And helium choose. .
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PERCENT YIELD!!!A sodium bromide solution containing 3.0 g of sodium bromide is reacted with excess dimercury (I) acetate solution The mass of the dry precipitate is measured to be 4.000 g. Calculate the percent yield for the precipitate.
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lewis structure for caffeine
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What is the best factor to consider in using the chemical sanitizer?
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a student predicts that the density of salt water is higher than the density of drinking water. the student hasa beaker filled with salt water, a beaker filled with drinking water, and a cube that is hung from a springscale. the cube will sink in both liquids. what measurements are needed to verify the student's prediction?
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9) Copper metal, Cu(s), will spontaneously reduce which of the following?a) Fe2+ and Ag+b) Fe2+c) Ag+d) Al3+e) Fe2+ and Al3+
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Successive IonizationEnergies (kJ/mol)1st: 786.32nd: 1,5803rd: 3,2304th: 4,3605th: 16,0006th: 20,000If this element is found in Period 3, what is its likely identity?a. sodiumb. magnesium c. aluminumd. silicon e. phosphorusf. sulfurg. chlorineh. argon
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emitters whose energies are less than 0.2 mev are not considered an external radiation hazard. which of the following is (are) external radiation hazards?
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balance the equation
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When dichlorocarbene is generated in the presence of an atkene. a dichlorocyclopropane is formed. Write the complete stepwise mechanism for the formation of dichlorocarbene, CCl2. Show all intermediate structures and show all electron
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Draw a Lewis structure for each species.(a) N2H4(b) N2H2(c) (CH3)2NH2Cl(d) CH3CN(e) CH3CHO(f) CH3S(O)CH3(g) H2SO4(h) CH3NCO(i) CH3OSO2OCH3(j) CH3C(NH)CH3(k) (CH3)3CNO
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Multiple Equilibria KA Explain What is Meant by Multiple Equilibria Question Adding ammonia to an aqueous solution of magnesium hydroxide: Select the correct answer below: O prevents precipitation of Mg(OH), O encourages precipitation of MgrOH), O lowers the pH O none of the above
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Is freezing point depression negative?
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How many Mg2+ ions are in 1.00 mole of MgO?
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Which equation represents the most accurate model of cellular respiration? note: c6h12o6 is the sugar, glucose.
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