Please help with question 4 Chem 105 OnlinePOST LAB CONCLUSIONS (you may use a separate sheet of paper for calculations as well)1. Why was something like a wooden block's density calculated by measuring thedimensions directly and calculating the volume instead of using the displacement inwater method?The wood would have soaked the water up, thereforeCreating inaccrrate totals.2. Measure the mass of each coin separately and record the masses below. Why wereseveral coins used for the density calculation instead of one.5.00g4.9094.93g4.9795.05g3. Ethyl acetate has a characteristic fruity odor and is used as a solvent in paint lacquersethyl acetate. What volume is this (inand perfumes. An experiment requires 0.985liters)? The density of ethyl acetate is 0.902g/mL.m=0.985 kgd=0.902g/mLm²0.985x10009=985gd=m/dxv=mv=m9859V=0.902 MLv=1092.0mlV²1092-0 =1.092L4. (EC) 70.4g of hematite (iron ore) was placed in a flask whose maximum volume was 55.0mL. The flask with hematite was then carefully filled with water too the maximum line andre-massed. The hematite and water had a mass of 109.3g. The density of the water was0.996g/cm³. What was the density of the hematite?5. (EC) The land area of Greenland is 820,000 mi2, with only 134,000 mi² free of perpetualice. The average thickness of this ice is 5,100 ft. Estimate the mass of the ice (assume twosignificant figures). The density of ice is 0.927g/cm³.greenland-820,000mi 2Land ofThickness of ice=5100 ftvolume of ice areax thickness2686,000m: 2x5100 ft.1²Area onder ice total area-area free of ice(820,000-134,000) mi ²= 686,000 milClaaftmassmass of ice: density = volumemass-density x volum=0.9272x2.76= 2.55852x10²1 2 2 6 X10²!

4) Given data is Mass of hematite (iron ore) = 70.4 g Volume of the flask = 55.0 mL The mass of…

1000 4. (EC) 70.4g of hematite (iron ore) was placed in a flask whose maximum volume was 55.0 mL. The flask with hematite was then carefully filled with water too the maximum line and re-massed. The hematite and water had a mass of 109.3g. The density of the water was 0.996g/cm³. What was the density of the hematite?

1000 4. (EC) 70.4g of hematite (iron ore) was placed in a flask whose maximum volume was 55.0 mL. The flask with hematite was then carefully filled with water too the maximum line and re-massed. The hematite and water had a mass of 109.3g. The density of the water was 0.996g/cm³. What was the density of the hematite?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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