Chemistry

224g koH is dissoved in water to make 2litres of solution?
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Which of these is not a component of Rutherfords model of the atom?
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molecules in which three atoms are arranged in a straight line are said to have ? geometry. quiz
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when fecl3 is ignited in an atmosphere of pure oxygen, this reaction takes place if 3.00 moles of fecl3 is ignited in the presence of 2.00 moles of o2 gas, how much of which reagent is present in excess and therefore remains unreacted?
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The variation of free energy of formation, Gf, of N2, at 25 C and 1 bar
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what are two design improvements that can be made to the flameless ration heater that to make it safer for air travel and more efficient at heating objects?
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what is the term for the weighted average mass of all the naturally occurring isotopes of an element? group of answer choices atomic notation atomic number atomic mass mass number none of the above
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the complex process whereby silicate minerals such as feldspar are broken down to make clay minerals by reacting with water molecules is .
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How many grams of carbon monoxide does a 3.0-L balloon contain?
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The reaction of 44.1 g of Cr203 with 35.0 g of Al produced 25.6 g of Cr. What is the percent yield for this reaction?2Al + Cr203 + Al203 + 2Cr
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I need help on this rq
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Imagine that humans achieve interstellar travel and are able to move from solar system tosolar system. What would change about the stars for these space travelers?A: absolute magnitude B:apparent magnitude C:absorption spectrum D:relative electromagnetism
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What is the molarity of a 4. 46L solution containing 9. 38 mol of Barium Chlorate?
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which solution could be used to precipitate the barium ion, ba2 , in a water sample: sodium chloride, sodium hydroxide, or sodium sulfate? what is the formula for the expected precipitate?
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write a series containing -CHO as a functional group.write the iupac name of 4th member of carboxylic acid,1st member of amide and 3rd member of acid chloride .help me with these ToT
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What mass of salt solution is made when 19 g of salt is dissolved in 55 g of water?
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hello i need someones help if you know the right answer 10 point
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A solution containing 0.13 M, each of I, Br, CO23, and C2O24 is titrated by a solution containing Pb2+. Place the anions in the order in which they will precipitate.
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When 25 mL of 1.0M HSO4 is added to 50 mL of 1.0 M NaOH at 25C in a calorimeter,the temperature of the aqueous solution increases to 33.9 C. Assuming that the specificheat of the solution is 4.18 J/gC, that its density is 1.00/mL, and that the calorimeteritself absorbs a negligible amount of heat, calculate the amount of heat absorbed for thereaction.
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) assume a basis of 1 mole of feed and draw and label a flowchart. carry out a degree-of-freedom analysis of the reactor based on the extent of reaction. (b) calculate the total moles of gas in the reactor at equilibrium and then the equilibrium mole fraction of hydrogen in the product. (c) suppose a gas sample is drawn from the reactor and analyzed shortly after startup and the mole fraction of hydrogen is significantly different from the calculated value. assuming the calculations are correct, what is a likely explanation for the discrepancy? (d) use a method numerical method of your choice to take the input of the reactor temperature and the input feed component mole fractions of co, h2o, and co2 (assume no hydrogen is fed) and to calculate the mole fraction h2 x in the product gas when equilibrium is reached. present your results in a table. use your numerical method to try and maximize the yield of hydrogen by adjusting the temperature and feed composition.
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the solubility of sodium chloride at room room temperature is 35.8g of nacl per 135.8 g of solution and the density of this solution is 1.20g/ml. calculate the molarity of a saturated solution of nacl
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calculate the molarity of a solution made by dissolving 1.25moles of na2cro4 in enough water to form exactly 0.550 l of solution.
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a solution contains 15.0 g of glycine, c2h5no2, in a total solution volume of 0.330 l. what is the concentration of glycine in the solution?
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in valence bond theory, covalent bonds are described in terms of the overlap of atomic or hybrid orbitals. group of answer choices true false
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