Chemistry

The dotted arrow in this reaction is a placeholder. Select the arrow that best describes the relationship between the reactants and products. -CECAH -CEC-L Identify the correct arrow descriptor.
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How many moles of O2 are needed to prepare 1.00 gram of Ca(NO3)2?Ca + N2 + 3O2 Ca(NO3)2A) 183 molesB) 366 molesC) 0.00200 molesD) 0.0183 moles
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The student's lab manual says to mix some of his Na2CO3 solution with an aqueous solution of copper(II) sulfate (CuSO4)i What evidence of a chemical reaction would he expect to see? Explain your answer.ii Write a balanced chemical equation to show the reaction. Include state symbols.iii What kind of reaction is this?
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What kind of bonding does sodium bicarbonate have?
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1 Calculate the atom economy to form copper(II)oxide fromCUCO3 -> CUO + COcopper(II) carbonate
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a 31.0 g sample of a metal is heated to 69.84 oc, then is placed in a calorimeter containing 55.26 g of water. temperature of water increases from 22.15 oc to 26 oc. what is the specific heat of the metal?
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What temperature is hot sink water?
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to start, watch as we mix various metal nitrates and alkali metal salts. make observations of the salts in water. which rule matches the videos the best?
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Which type of bond will most likely be found in HBr given that the electronegativity of hydrogen is 2.20 and the electronegativity of bromine is 2.96?an ionic bonda metallic bonda polar covalent bonda nonpolar covalent bond
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the percent copper in an unknown copper compound is 26.30 %. what is the formula weight of the unknown compound? you may assume that one mole of the compound contains one mole of copper. enter your answer in units of amu.
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the drug rocecoxib contains an atom of this element double-bonded to two different oxygens and is better known by the trade name viox
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What Is The Product Of The Following Reaction Sequence:
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What is meant by exposure route?
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. Choose the best answer from the given alternatives 9.Rate of dissociation of a solution is largely depends up on; A. Inter- particle force B. Pressure of the system C. Temperature of the system D. surface area of the solid solute
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What is the molarity of C2H5OH water solution which will freeze at 10 degree Celsius?
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A gas mixture containing oxygen, nitrogen, and carbon dioxide has a total pressure of 42.9 kpa. what is the partial pressure of carbon dioxide if the partial pressure of oxygen is 6.6 kpa and the partial pressure of nitrogen is 23.0 kpa? a. 29.6 kpa b. 19.9 kpa c. 13.3 kpa d. 36.3 kpa e. 14.3 kpa
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Why do thunderclouds grow very tall?
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Q.) Oxidation number of P in PO4, of S in SO4 and that of Cr in CrO7 are respectively: (a) +3, +6 and +5 (b) +5, +3 and +6 (c) +3, +6 and +6 (d) +5, +6 and +6
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What is the difference in oxidation state of chromium in chromate and dichromate salts ?ty! :)
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Identify the reagents needed to carry out each reaction. H20 Br NaH OH TsCI pyridine OTs TsOH Br HBr NBS KOC(CH3)3 CI H.O 2 Br 011 Cl
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question another sample of eggshell reacts completely with 4.0ml of an hcl(aq) solution of unknown concentration. if the reaction produced 0.095atm of gas, the concentration of the hcl(aq) solution was at least
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The result of the following calculation has howmany significant figures?(0.4333 J/g C) (33.12C - 31.12C)(412.1 g)
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.The equation shows the complete combustion of propane. C3H8(g) + 502(g) 3CO2(g) + 4HO(l) Which statement is correct? A 10 cm of propane cannot burn if less than 50 cm of oxygen is present.B 10 cm of propane would produce 40 cm of liquid water. C 100 cm of oxygen would be sufficient to react completely with 20 cm of propane. D This reaction would result in an increase in the volume of gas.
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