THIS IS AN EXAMPLE OF WHAT THE RESPONSE TO THIS QUESTION SHOULD LOOK LIKE. APPLY THIS TO THE QUESTION GIVEN BELOW! Question: calculate the density of a solid object if the mass is 2.335 g and the volume was determined by water displacement. The initial volume was 22.5 mL and the final volume was 32.0 mL. SHOW ALL WORK FOR FULL CREDIT. ANSWER: D = m/V = 2.335 g/(32.0 mL-22.5 mL) = 0.25 g/mL OR D = m/V m=2.335 g; V= 32.0 mL-22.5 mL = 9.5 mL Then D = 2.335 g/9.5 mL = 0.25 g/mL A titration reaction between solutions of strontium hydroxide and phosphoric acid is allowed to reach the equivalence point. A. Write the balanced neutralization reaction including states of matter (1, aq, s, g) B. What is the molarity of the strontium hydroxide solution if 30.00 mL of the solution is titrated with 35.55 mL of 0.4225 M phosphoric acid solution? SHOW ALL WORK FOR FULL CREDIT

THIS IS AN EXAMPLE OF WHAT THE RESPONSE TO THIS QUESTION SHOULD LOOK LIKE. APPLY THIS TO THE QUESTION GIVEN BELOW! Question: calculate the density of a solid object if the mass is 2.335 g and the volume was determined by water displacement. The initial volume was 22.5 mL and the final volume was 32.0 mL. SHOW ALL WORK FOR FULL CREDIT. ANSWER: D = m/V = 2.335 g/(32.0 mL-22.5 mL) = 0.25 g/mL OR D = m/V m=2.335 g; V= 32.0 mL-22.5 mL = 9.5 mL Then D = 2.335 g/9.5 mL = 0.25 g/mL A titration reaction between solutions of strontium hydroxide and phosphoric acid is allowed to reach the equivalence point. A. Write the balanced neutralization reaction including states of matter (1, aq, s, g) B. What is the molarity of the strontium hydroxide solution if 30.00 mL of the solution is titrated with 35.55 mL of 0.4225 M phosphoric acid solution? SHOW ALL WORK FOR FULL CREDIT

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

Problem 43GQ: Hexane (C6H14, density = 0.766 g/cm3), perfluoro-hexane (C6F14, density = 1.669 g/cm3), and water...

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A chemist prepares a solution of calcium bromide (CaBr,) by weighing out 369. kg of calcium bromide into a 250. mL volumetric flask and filling the flask the mark with water. Calculate the concentration in g/dL of the chemist's calcium bromide solution. Round your answer to 3 significant digits. x10 dL Submit Assige Continue 2021 McGraw Hill LLC All Rights Reserved Terms of Use Privacy Center Acces & %$4 4 5 6 7 8 2 3
* Question Completion Status: QUESTION 3 A If 20.0 Cal make an ounce, how many ounces of formula should a baby drink per day if the energy need per day is 1.50 x 10³ Cal? Express answer to the correct number of significant figures. 75.0 x 10E3 ebapps~2Fblackboard~2Fcontent~2Flist Content.jsp%3Fcourse_id%3D_514... QUESTION 4 A 9.86 g sample of iron metal was heated in water to 85°C. Then, it was dropped into a beaker containing 240.0 g of H₂O at 28.5°C. Assuming that the water gained all the heat lost by the iron, what is the final temperature of the H₂O and Fe? If 756 cal of heat were added to 64.8 g of Al at 32.5 °C, what is the final temperature of the aluminum? 10
2:53 1 Question 43 of 45 Submit A student needs to run 3.2 km to get to school. If the student can run 5.5 mi/hr , how many hours will it take them to get to school? STARTING AMOUNT ADD FACTOR ANSWER RESET -( ) %3D 18 1 mi/hr 0.36 km 1.609 mi 5.5 hr 60 min 0.94 3.2 0.58 0.6214 35 Tap here or pull up for additional resources
= 1 = 2 = 3 = 5 6. 7 = 8 10 = 11 12 A chemist prepares a solution of calcium sulfate (CaSo,) by measuring out 0.482 umol of calcium sulfate into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's calcium sulfate solution. Round your answer to 3 significant digits. mmol Continue Submit A= © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center e to search 74°F Mostly clear 立 O
Part A If 2.0 x 10-4 moles of S20 in 50 mL solution is consumed in 3 minutes and 17 seconds, what is the rate of consumption of S20 ? Express the rate in mol per liter-second to two significant digits. M 2.128 10 Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining < Return to Assignment Provide Feedback
A human hair is 75 um across. How many inches is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %D 0.01 100 10 1 1x 10° 1 x 10-6 0.1 2.54 1 x 106 0.33 0.001 0.003 3.0 1 x 10-9 75 1000 0.00003 in mm cm um 30
2. Using Excel, make a graph of the following data. Plot Mass vs. Volume for the following data on the same graph. Use a linear fit of each set of data and include the equation of the best fit line (2 fits and 2 equations, making sure you can tell which equation is for which set of data). Submit your graph and answer the three questions below. Volume (ml) 5.00 10.00 15.00 20.00 30.00 Mass of Al (g) 43.195 56.053 70.961 82.499 108.988 Mass of Zr (g) 63.797 94.708 127.933 158.580 227.037 For both straight lines, the slope is essentially equal to the density of the element. The y-intercept is equal to the mass of the beaker that held the substance. Answer the following questions. a) For each element, what is the density (slope)? What is the mass of the beaker (y-intercept)? Be sure to include units. b) If you have 120.000 g of Al and beaker, what is the volume? 21.⁰ c) When the volume of Zr is 25.00 mL, what is the mass?
It gives inacurate results For Wooden" sphere because wood haS the ability to absoro water (imbibition) Date For which object does the method of volume by displacement give an inaccurate result? Why? A4. Calculate the density of each object (use the volume by displacement determination of the volume for each object except the wooden sphere; for the wooden sphere use the volume calculated from the diameter). Show all work with units and record your answers in the table below to the correct number of significant figures and with proper units. pensitty=MassOF Substance VOIUME oF Substance Show work: Lead: 47.460905. 5SF IRON: 263:60955F ろろ。5 ML-るSF -니.2ML→25F =11.39/MLE119/ML %3D7.879/ML nkown sphere: 7.380g-05 4.2ML 2 golden nugget: 31.0094 *VolUMe OF WOoden Sphere: TS OFWOoden sph- ir=radius OF WOoden Sph. 8.99/ML 1.6ML2 %3D199/ML| Table 2: Density Results Object xx 27 CM3 bensity= 그9.170 g/ML=Ol0981 g/ML Calculated Density 119/ML 7.879/ML 0.698/ML 3.99/ML 199/ML lead sphere =113ML…
A chemist prepares a solution of potassium permanganate (KMnO4) by measuring out 3.8 mg of potassium permanganate into a 50. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium permanganate solution. Be sure your answer has the correct number of significant digits. mol/L Continue != 11 zase RK- burial Sent papers to M.Kem WE burial-go ahead HE Turner Batavia Justin Sawith x10 X The Grand in Buffale 1205 Delaware Ave Buffalo NY 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center ******* Christopher Mitchell SM Submit Assignment setup appt for Accessibility In [113] C200 30 Recen 6 ol. 19 Ar Like?
Significant Figures of log measurements. Perform the following calculations and report each answer with the correct number of significant figures Log 4.38 pH = – Log 6.243 x 10-5; pH = ______. Antilog -1.48 Antilog 32.23 Perform the following calculations and report each answer with the correct number of significant figures (321.54 x 79.2)+0.0056 log 8.005 x 10-4 + log 6.0455 x 10-7 (5.6x103 x 2.42x105)/(0.359+0.699)
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Say you glued two samples together; a 5.00 g sample of acrylic with a density of 1.19 g/mL and a 2.35 g sample of Teflon (d = 2.22 g/mL). What is the density of the combined sample? Be careful here and remember the difference between intensive and extensive properties. • View Available Hint(s) 3.252 g/mL Submit Previous Answers