Chemistry

At 12.0 C , a common temperature for household freezers, what is the maximum mass of sorbitol (C6H14O6) you can add to 2.00 kg of pure water and still have the solution freeze? Assume that sorbitol is a molecular solid and does not ionize when it dissolves in water.
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Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats.
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Draw the triglyceride formed from the esterification of glycerol and three molecules of myristic acid.
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a 4.0 L sample of gas at 1.4 atm is heated from 298ck to 310 k. the pressure of the gas increases to 2.1 atm. what is the new volume of the gas ?
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Please help! ASAP Thanks
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Given the unbalanced equation: N2(g) + H2(g) NH3(g)When the equation is balanced using the smallest whole-number coefficients, the ratio of moles of hydrogen consumed to moles of ammonia produced is1 ) 1:32) 2:33) 3:14) 3:2
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2.50g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 128. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured:product masscarbon dioxide8.60gwater 1.41gUse this information to find the molecular formula of X.
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1.00 M CaCl2 Density = 1.07 g/mL % (m/m) CaCl2 _______% (m/v) CaCl2 _______N Ca+2 ______N Cl ______m CaCl2 ______CaCl2 _______H2O _______mass of 100. mL of this solution _______ g solutionH2O in 100. mL of this solution _______ g H2O
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Describe and explain how electrical conductivity occurs in mercury bromide and mercury, in both solid and molten states.
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When 0.5000 grams of an unknown hydrocarbon, CxHy, is completely combusted with excess oxygen, 1.037 L CO2 gas and is produced at 98.3 C and 1.000 atm. What is the empirical formula of the hydrocarbon? (R = 0.08206 Latm/molK)
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Find the angle between the diagonal of a cube of side length 8 and the diagonal of one of its faces, so that the two diagonals have a common vertex. The angle should be measured in radians. (Hint: we may assume that the cube is in the first octant, the origin is one of its vertices, and both diagonals start at the origin.)
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In this experiment, you will change the temperature and particle size of the antacid tablet and observe how these changes affect reaction. In the space below, write a scientific question that you answered by doing this experiment
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How much heat must be absorbed by 125 g of ethanol to change its temperature from 21.5 C to 34.8 C? (Specific heat capacity of ethanol is 2.42 J/gC) a. 86.6 kJ b. 4.02103kJ c. 6.95 kJ d. 4.02 kJ
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5. Using the terms: metal and nonmetal, describe what types of atoms make up each type ofbond.
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5)A chlorine atom reacts with a sodium atom to form sodium chloride, NaCl. A chlorine atom can also react with another chlorine atom to form a chlorine molecule, Cl2. Which statement BEST explains the behavior of chlorine in these two reactions
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A student reacts 25.0 mL of 0.175 M H3PO4 with 25.0 mL of 0.205 M KOH. Write a balanced chemical equation to show this reaction. Calculate the concentrations of H3PO4 and KOH that remain in solution, as well as the concentration of the salt that is formed during the reaction.
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which diagram best illustrates the ion-molecule attractions that occur wen the ions NaCl(s) are added to water
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As a scuba diver descends under water, the pressure increases. At a total air pressure of 2.71 atm and a temperature of 25.0 C, what is the solubility of N2 in a diver's blood? [Use the value of the Henry's law constant k calculated , 6.26 x 10^{-4} (mol/(L*atm).] Assume that the composition of the air in the tank is the same as on land and that all of the dissolved nitrogen remains in the blood. Express your answer with the appropriate units.
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Read the "Chemical Insights: Fireworks" essay within Ch 12 of the Zumdahl textbook. Which of the following substances produce bright yellow emissions that can mask other emission colors? Two of the answer choices below are correct...select the two correct answers.(Grading Note: for this type of question, Canvas will award points for correct selections and deduct points for incorrect selections.)A.sodium saltsB.carbon-based fuelsC.magnesium saltsD.aluminum salts
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Write the balanced molecular equation for the reaction of sodium metabisulfite (Na2S2O5) with water to produce sodium bisulfite (NaHSO3) and then write the net ionic equation for this reaction. Why is sodium bisulfite prepared using this method?
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You need to prepare a solution with a specific concentration of Na+Na+ ions; however, someone used the end of the stock solution of NaClNaCl, and there isnt any NaClNaCl to be found in the lab. You do, however, have some Na2SO4Na2SO4. Can you substitute the same number of grams of Na2SO4Na2SO4 for the NaClNaCl in a solution? Why or why not?
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For some reaction carried out at constant atmospheric pressure and at a constant temperature of 25C, it is found that H = 38.468 kJ/mol and S = +51.4 J mol K . What is the value of G for this reaction under these conditions?
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When aluminum hydroxide (dissolved in water);is mixed with aqueous sulfuric acid (H2SO4) the products are aluminum sulfate (a precipitate) and liquid water
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Which of the following could a magnet float over?A. A network solidB. A molecular solidC. A semiconductorD. A superconductor
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