Given the following set of data for the determination of density of solid material: Mass of empty beaker = 37.54 g; Mass of empty beaker + solid = 48.36 g; Initial graduated cylinder reading = 25.00 mL; Final graduated cylinder reading = 26.50 mL; The density (g/cm3) of the solid is: a. 7.213 b. 7.2133 С. 7.2 d. 7 е. 7.21
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- These organic solvents are used to clean compact discs : (a) If a 15.00-mL sample of CD cleaner weighs 11.775 g at 208C, which solvent does the sample most likely contain? (b) The chemist analyzing the cleaner calibrates her equipment and finds that the pipet is accurate to +-0.02 mL, and the balance is accurate to +-0.003 g. Is this equipment precise enough to distinguish between ethanol and isopropanol?For a given substance, do you expect the density of the substance in its liquidstate to be closer to the density in the gaseous state or in the solid state?Particles are far apart;possess complete freedomof motion; kinetic energies ofparticles >> energies ofparticle–particle attraction.Particles are closely packedbut randomly oriented; retainfreedom of motion; kineticenergies of particles similar toenergies of particle–particleattraction.Particles are closely packed inan ordered array; positionsare esse?t?ally fi?e?? e?er??esof particle–particleattraction >> kinetic energiesof particles.Chlorine, Cl2 Bromine, Br2 Iodine, I2Increasing intermolecular attractions3. (a) Express (as/aT), in terms of measurable properties beginning with the definition of ds and recognizing that dS = dH = CpdT
- 351145 TECHNO Define fundamental unit with an example. Why is the unit of force called a derived unit? ic a derived unit? Give its two examples. measurement Dats : D Graphite and iodine a y shine. Explain it with suitable yeasons. Graphite and are non-metals but the iodine are non- metals but REDMI NOTE 10 PRO KBYLWHARNA THAPA A chemical propertie39/99/2021 17:36In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.(b) Find a 0.95 confidence interval for p.(c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?If 10.0 mL of H2SO4 (sp. Gr. 1.50, containing 48.7% of combined SO3 by weight) is diluted to 400 mL, what is the normality of the solution as an acid? (b) What volume of 6.00 M H2SO4 should be added to this in order to make the resulting mixture 1.00N as an acid? FW's : H2SC4 = 98; SO3 = 80
- 2 Automobile air bags inflate following a serious impact. The impact triggers the following chemical reaction. 2NaN3 (8)→ 2 Na(s) + 3N₂ (9) S W stry.com/myct/itemView?assignmentProblemID=213377858&attemptNo=2&offset=next X 7 # 3 E D 80 C $ 4 R 888 F V % 5 FS T Y G A Part A 6 B If an automobile air bag has a volume of 11.2 L, what mass of NaN3 (in g) is required to fully inflate the air bag upon impact? Assume STP conditions. IVE ΑΣΦ Provide Feedback m = Submit MacBook Air F6 Y H & 7 Request Answer N 40 U J * 8 @ C PwC FB I M ( 9 K DD ? O ) O g L command 3 F10 P . : ; Review I Constants I Periodic Table I { + [ option = 11 ? 1 I 323) Next > 1 deleteWrong (L) - calculator- Google Search d/1PrqdNDx-hBYyzKo-xfiM9-Jlq7EAaWe3GBt t3U3jDo/edit Calculator O A Land of Permane... t edit was seconds ago I U A 三| 扫 E▼ 三▼ 4 Fe + 30, - 2 Fe,0, 4. What volume (liters) of O, is required to react with 1.7 moles of Fe? 1.7 moles Fe 1 mole O. 224 LO, 4 moles Fe 1 mole O. * How many meles of iron would have to reacr to produce 35moles of tron ) oxide"A hot water bath was made by adding about 250-mL of distilled water to a 400-mL beaker. The beaker was placed on a hot plate and heated until the water was about 70oC. 9.982 g KNO3 was added to a 25-mL graduated cylinder. About 8 mL of distilled water was added to the graduated cylinder and it was placed in the hot water bath. The mixture was stirred continuously with a temperature probe and heated until all the KNO3 dissolved. The solution was clear and colorless and the volume of this solution was 12.5 mL. (This initial solution is called Solution 1.) The graduated cylinder was removed from the hot water bath and, while continuing to stir, Solution 1 was allowed to cool. White crystals of KNO3 were first observed at 64.1oC. Solution 1 Mass of KNO3 9.982 g Volume of Solution 12.5 mL Crystallization temperature 64.1 C Calculate the Ksp value for KNO3 at the crystallization temperature.
- According to the ideal gas law, the pressure, temperature, and volume kT where k is a constant of V' of a gas are related by P proportionality. Suppose that V is measured in cubic inches (in³), T is measured in kelvins (K), and that for a certain gas the constant of proportionality is k = 5 (in · lb)/K. NOTE: Enter the eract answers. (a) Find the instantaneous rate of change of pressure with respect to temperature if the temperature is 44 K and the volume remains fixed at 20 in³. ] lb/(in²K) (b) Find the instantaneous rate of change of volume with respect to pressure if the volume is 20 in³ and the temperature remains fixed at 44 K. in /lbA sample of volume 270 cm³ has a mass of 0.645 kg. (a) What is the density of the sample? (b) Is the material gaseous or condensed? g/cm3SED THIS? Watch KCV: Kinetic Molecular ry, IWE Root Mean Square Velocity: Read ion 6.8. You can click on the Review link to ess the section in your eText. culate the root-mean-square velocity and kinetic gy of CO. CO₂, and SO, at 294 K Y Part D Calculate the kinetic energy of CO at 294 K Express the kinetic energy in joules per mole to three significant figures. ΤΙ ΑΣΦ Eug Submit Part E Request Answer να 1 ΑΣΦ ? Review Constants I Periodic Table J/mol Calculate the kinetic energy of CO₂ at 294 K Express the kinetic energy in joules per mole to three significant figures.