Calculate the mass of sulfuric acid, H2SO4, which needs to be used to prepare 400 cm3 of a 0.25 mol/dm3 solution. A[S=32.1, O=16.0, H=1.0] Round answer to tyvo decimal places.
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- Mass of the gelatin capsule was: 0.1134 g Mass of the capsule and the allow sample was: 0.3218 g Ambient Temperature was: 23°C Mass of empty beaker: 154.3 g Mass of beaker with water: 401.6 g Vapor pressure of water for this data: 21.1 mmHg Atmospheric Pressure: 732 mmHg Assume density of water to be 1.0000 g/mL What is the volume of the displaced water in Liters? Using PH2V= nH2RT, nH2=PH2V/RT how many moles of H2 were evolved? Determine the number of moles of H2 per gram of sample. Determine the %Al using NH2= (%AL/100 * 0.0556) + (100-%AL/100 * 0.0153)pls complete the 2nd table given the data1. 500.0 mL 0.2 M KI2. 500.0 mL 0.2 M KCl3. 500.0 mL 0.1 M K2S2O84. 500.0 mL 0.1 M K2SO45. 500.0 mL 4.0 mM Na2S2O3 (from Na2S2O3∙5H2O)These organic solvents are used to clean compact discs:(a) If a 15.00-mL sample of CD cleaner weighs 11.775 g at 20C, which solvent is most likely to be present?(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 dis-tinguish between ethanol and isopropanol?
- If 1.5 x 1022 carbon atoms were placed side-by-side in a line, how long would that line be (in feet) if the radius ofa carbon atom is 77 pm? Set up and solve a single step dimensional analysis problem that includes all necessaryfactors.A. B. and C. already solved (https://www.bartleby.com/questions-and-answers/chemistry-question/a89691d6-2162-4677-b0cc-dc84fcceda08). Please answer E, F and GCircle in pencil in the image on th eirght cide of the diagram is a "2"( Pb(NO3)2 ).Parts G and H. I thought the answers were 56.21 and 115.21 but it says they're wrong.
- QUESTION 17**** My answer was n=3, l=1, ml=-1 and ms=-1/2 From what I know, theres no possible way to calculate ml , so I must be mean't to choose a value that abides by -l to +l. Was my answer correct?It is estimated that uranium is relatively common in earth's curst, occuring in amounts of 4g/metric ton. A metric ton is 1000 kg. At this concentration, what mass of uranium is present in 1.0 mg of the earth's curst? (The answer is suppose to be 4X10-9 grams)The Ka for HIO is 2.0 x 10-11. Calculate the Kb for IO-1.