State finding the density of a liquid and of a solid

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1- Which method for determining the density (cylinder or pipette ) is more accurate? which method is more precise? explain why.

2- what are the possible sources of error when finding the density of a liquid and of a solid? what can be done to avoid these errors?

3- how do i calculate % NaCl of the unknown from a line equation?

Reference no: EM13185909

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