Chem assignment 4

Experiment 4: DENSITY

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Data Collection and Results Pages Name: __________________________ (Show work for all calculations.) Date: ___________________

I. Density of Water Room Temp: ___________ Correct Density of Water at this Temp: ________________ Reference: Calculate the density of water for each trial: Trial 1: Trial 2: Calculate the Average Density of Water: Note: The average value cannot have more precision than the individual values. As a rule of thumb, the average should have the same decimal places as the individual values. Calculate the Error in the Average Density: (Watch your sign and sig. fig.!) Calculate the % Error in the Average Density: (Watch your sign and sig. fig.!)

2 EXPERIMENT 4: DENSITY

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II. Density of Marbles

Mass of the 3 marbles = _______ Volume of the 3 marbles = _______ Density of the 3 marbles* = _______

*Show calculation for the density of the 3 marbles: Calculate the Average Density from the class data: Calculate the Error in the Average Density: Calculate for % Error in the Average Density:

8 mL Trial 10 mL Trial Mass of Water in Cylinder Volume of Water in Cylinder Calculated Density of water Average Density of Water Correct Density of Water Error in the Average Density % Error in the Average Density

EXPERIMENT 4: DENSITY 3

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CLASS DATA ON DENSITY OF MARBLES

Name of Student DENSITY OF MARBLES reported Yours

1.

2.

3.

Average Density

Correct Density (from instructor)

Error in Average Density

% Error in Average Density