Y Measurements and Density Section Name Report Trial 2 Trial 1 Trial 3 B.Density of a Salt Solution 46.2616 B5644 12,2052 Report 30LTY 44 492374 QUESTIONS 1. Mass of 20 or 25 mL solution +flask, g ४8)27 1. From your data, calc Mass of flask, g a. salt solution Mass of 20 or 25 mL solution, g vo LIGT Volume of solution, mL b. metal bar Density of salt solution, g/mL Vol O095.7 7 RAD- O.001 Average density of salt solution, g/mL 1.1 502610 Relative average deviation, % 50.2153 32.5214 4 6939 50.1 57 2. From your an yolume. Exp 2.Mass of cylinder + solution, g BEGP31 Mass of cylinder, g ud Istnm XO 42999 Mass of solution, g Volume of solution, mL C 159 Pest A# Density of solution, g/mL 3. Define t 55 Average density of salt solution, g/mL Relative average deviation, % oemi! Sample Calculations (Part II.B) DEEB 0FPTL B Am In the space below, include a sample calculation of each type necessary to obtain the results in the above table. This calculation should include the equation used, substituted values, and results. Arithmetic need not be shown. In doing the calculations, please be careful to record all measured numbers to the correct number of significant figures. Check your final answers to see that they are within the expected range: The density of the salt solution approximates 1.1-1.2 g/mL. Be sure to include the units (g, mL, cm, or data. 4. Ar g/mL) with all 161-11691- 0.0o P161 61681-0 gol 5. ce (AI 2C d doo to notloolao ofomae ousup 9exbin .a utb bloode 1.169-1169 bro Siq 2noh un avu 0 rad vinach & oved

Ball # Ball #1 Ball #2 Ball #3 Ball #4 Ball #5 Ball #6 Ball #7 Unknown Ball #1 Unknown Ball #2 Unknown Ball #3 Mass (g) 130.58 g 66.90 g 8.35 g 2.71 g 1.49 g 0.70 g 0.24 g 225.52 g 16.33 g 1.812 kg Diameter (cm) 3.15 cm 2.55 cm 1.27 cm 0.97 cm 0.72 cm 0.56 cm 0.40 cm Volume (cm³) 1. Calculate the volume of ball bearings 1 - 7 and record the result with excess significant figures in the table above. Show one example calculation below. Density (g/cm³) Correct Sig Figs! 4 3 π = 3.14159 V= 3 π r³

The mass unit associated with density is usually grams. If the volume (in mL or cm³) is multiplied by the density (g/mL or g/cm³) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation. If a large marshmallow has a volume of 2.00 in³ and density of 0.242 g/cm³, how much would it weigh in grams? 1 in3 16.39 cm³. Express your answer in grams to three significant figures. • View Available Hint(s) ΑΣφ ? DA mass of marshmallow =

Best fit line? R^2 value? Density of water?

Distinguish between the terms accuracy and precision.In general, explain why a precise measurement does notalways guarantee an accurate result.

What would be the difference in precision and accuracy if I chose to use a graduated cylinder instead of a buret? Explain.

Convert 7.2 qt to μL. Be sure your answer has the correct number of significant figures. Note: Reference the Conversion factors for non-SI units table for additional information. Note: Reference the SI prefixes table for additional information.

Please don't provide handwritten solution ....

The mass of one atom or molecule of a substance is given in atomic mass units, also called Daltons (abbreviated D or Da). Thus one molecule of water has a mass of 18.015 atomic mass units, or 18.015 Daltons. The atomic mass unit is defined such that one mole of water weighs 18.015 g. Suppose a protein has a mass of 64 192 Daltons (or 64.192 kDa). What would be the mass of one mole of this protein? O A. A protein of 64 192 Da has a molar mass of 3.866 x 1028 g/mol. B. A protein of 64 192 Da has a molar mass of 1.0 g/mol. C. A protein of 64 192 Da has a molar mass of 18.015 g/mol. D. A protein of 64 192 Da has a molar mass of 64.192 g/mol. E. This question can't be answered without knowing the number of atoms in the protein. F. A protein of 64 192 Da has a molar mass of 6.4192 x 10-2 g/mol. G. A protein of 64 192 Da has a molar mass of 3.866 x 1025 g/mol. H. A protein of 64 192 Da has a molar mass of 64 192 g/mol.

Iron has a density of 7.86 g/cm° (1 cm° = 1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 3.62 kg . Note that the density is provided in different units of volume and mass than the desired units of volume (dL) and the given units of mass (kg). You will need to express the density in kg/dL ( 1 cm3 1 mL) before calculating the volume for the piece of iron. Express your answer to three significant figures.