# Water vs Baby Oil

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Steven Young Mr. Greytak Block 4 17 September 2012 Title: Water vs. Baby Oil Objective: In this lab, the goal that is trying to be determined is the density of water compared to baby oil. Procedure: We started out by pouring water in a graduated cylinder and finding the volume. Next, we measured the weight on a scale in grams. The baby oil was found by pouring it in a graduated cylinder to find the volume. Finally, we stuck it on the scale to find the weight. Data Table: Baby Oil | Volume (mL) | Mass (grams) | 20 | 17.26 | 13 | 11.61 | 10 | 9.02 | 9 | 8.2 | 8 | 7.55 | 7 | 6.61 | 5 | 4.59 | | 3.86 | Water | Volume(mL) | Mass(grams | 20 | 18.92 | 13 | 13.24 | 10 | 9.79 | 9 | 8.9 | 8 | 7.42 | 7 | 6.8 | 5 | 4.83 | 3 | 4.31 | Data Analysis: The density of the water is 1.15 g/mL³. The density of the baby oil is .86 g/mL³. The standard density of water is 1.0 g/mL³. The standard density of baby oil is .87 g/ml³. The error in my calculations for water was .15 g/mL³, and my error in calculations for baby oil was .01 g/mL³. The percent error of my calculation for water was .15%, and the percent error for my calculation of the baby oil was .01%. Conclusion: My conclusion on this was that baby oil and water have almost the same densities. My densities for water and baby oil were not off that much from the actual value. The error of both was not more than 2g/mL³. The percent error shows that I was accurate on my answers for the densities of each. My source for finding the density of both water and baby oil was http://cameo.mfa.org/browse/record.asp?subkey=6097. An improvement for the lab could have been a water dispenser that pours out the exact amount water and baby oil that you want to use, so you would be sure to have no variation in the amount used. An error that could have been made was their being water or baby